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Supermicro C7B250-CB-MK Motherboard User’s Manual

C7B250-CB-MK Block Diagram

DDI 1

DDI 2

DDI 3

2 X USB 2.0 Rear

480Mbps

USB2.0

2 X USB 2.0 Header

480Mbps

USB2.0

2400/2133MHz

IMVP8

PCIe3.0_x16

8.0GT/s

SVID

IMVP8

DDR4 (CHA)

DDR4 (CHB)

2400/2133MHz

8GT/s

x4 DMI

RJ45

8GT/s

PCIe3.0_x1

GLAN1

I219V

AZALIA

Realtek ALC888S

FLASH

SPI 128Mb

SPI

DVI

Display Port

HDMI

DDI1

DDI2

DDI3

LPC

DIMMA2

DIMMB2

TPM 2.0 Header

COM1 Header

NCT6792D-B
LPC I/O

PCIe x8(in x16) SLOT #6

PCIe x16 SLOT #6

P33

PCIe3.0_x8

8.0GT/s

1 X M.2 SOCKET SSD

8GT/s

PCIe3.0_x4

PCIe x1 SLOT Rear

8GT/s

PCIe3.0_x1

USB3.0

5Gbps

2 X USB 3.0 Rear

2 X USB 3.0 Header

5Gbps

USB3.0

PS2 KB/MS

6X SATA-III

SATA-III

6Gb/s

Audio Jack/ Aduio Pin Header

PCIe x4 SLOT Rear

PCIe3.0_x4

8GT/s

2 X USB 3.0 Rear

USB3.0

5Gbps

INTEL LGA1151

(Socket-H4)

Intel

PCH-H

B250

Summary of Contents for C7B250-CB-MK

Page 1: ...C7B250 CB MK USER S MANUAL Revision 1 0 ...

Page 2: ... limits for a class B digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruc tions may cause harmful interference to radio communications However there is ...

Page 3: ...p ter when installing the processor memory modules and other hardware components into the system If you encounter any problems see Chapter 3 which describes trouble shooting procedures for video memory and system setup stored in the CMOS Chapter 4 includes an introduction to the BIOS and provides detailed information on running the CMOS Setup utility Appendix A provides BIOS Error Beep Codes Appen...

Page 4: ...or provides information for correct system setup Supermicro C7B250 CB MK Motherboard User s Manual Checklist Congratulations on purchasing your computer motherboard from an ac knowledged leader in the industry Supermicro boards are designed with the utmost attention to detail to provide you with the highest standards in quality and performance Please check that the following items have all been in...

Page 5: ...den gleichen oder vom Hersteller empfohlenen Batterietyp Entsorgen Sie die benutzten Batterien nach den Anweisungen des Herstellers Warning There is a danger of explosion if the battery is replaced incorrectly Re place the battery only with the same or equivalent type recommended by the manufacturer Dispose of used batteries according to the manu facturer s instructions 電池の取り扱い電池交換が正しく行われなかった場合破...

Page 6: ...ال حالة في انفجار البطارية صحيحة غير بطريقة فعليل البطارية اسحبذال فقط النىع بنفس يعادلها ما أو مما أوصث المصنعة الشرمة به البطاريات من جخلص ل وفقا المسحعملة الصانعة الشرمة حعليمات 경고 배터리가 올바르게 교체되지 않으면 폭발의 위험이 있습니다 기존 배터리와 동일 하거나 제조사에서 권장하는 동등한 종류의 배터리로만 교체해야 합니다 제조사 의 안내에 따라 사용된 배터리를 처리하여 주십시오 Waarschuwing Er is ontploffingsgevaar indien de batterij verkeerd vervangen wordt Ver vang de batterij ...

Page 7: ...cionales Attention La mise au rebut ou le recyclage de ce produit sont généralement soumis à des lois et ou directives de respect de l environnement Renseignez vous auprès de l organisme compétent המוצר סילוק אזהרה ו להנחיות בהתאם להיות חייב זה מוצר של סופי סילוק המדינה חוקי Waarschuwing De uiteindelijke verwijdering van dit product dient te geschieden in over eenstemming met alle nationale wetten...

Page 8: ...cro com Europe Address Super Micro Computer B V Het Sterrenbeeld 28 5215 ML s Hertogenbosch The Netherlands Tel 31 0 73 6400390 Fax 31 0 73 6416525 Email sales supermicro nl General Information support supermicro nl Technical Support rma supermicro nl Customer Support Web Site www supermicro nl Asia Pacific Address Super Micro Computer Inc 3F No 150 Jian 1st Rd Zhonghe Dist New Taipei City 235 Tai...

Page 9: ...w the links below to download all necessary drivers utilities and the user s manual for your motherboard SMCI product manuals http www supermicro com support manuals Product Drivers and utilities ftp ftp supermicro com If you have any questions please contact our support team at support supermicro com ...

Page 10: ...r Loss 1 4 1 5 PC Health Monitoring 1 4 Fan Status Monitor and Control 1 4 Environmental Temperature Control 1 4 System Resource Alert 1 5 1 6 ACPI Features 1 5 Slow Blinking LED for Suspend State Indicator 1 5 1 7 Power Supply 1 6 1 8 Super I O 1 6 Chapter 2 Installation 2 1 Installation Components and Tools Needed 2 1 2 2 Static Sensitive Devices 2 2 Precautions 2 2 Unpacking 2 2 2 3 Processor a...

Page 11: ...Ports 2 17 VESA DisplayPort 2 17 HDMI Port 2 17 DVI Port 2 17 Front Control Panel 2 18 Front Control Panel Pin Definitions 2 19 Power LED 2 19 HDD LED 2 19 NIC1 LAN 2 19 Overheat OH Fan Fail 2 19 Reset Button 2 20 Power Button 2 20 2 7 Connecting Cables 2 21 ATX Main PWR CPU PWR Connectors 2 21 Fan Headers 2 22 Chassis Intrusion 2 22 Serial Port 2 23 Speaker 2 23 DOM PWR Connector 2 24 SPDIF OUT 2...

Page 12: ...iguration 3 2 3 2 Technical Support Procedures 3 3 3 3 Frequently Asked Questions 3 4 3 4 Battery Removal and Installation 3 5 Battery Removal 3 5 Proper Battery Disposal 3 5 3 5 Returning Motherboard for Service 3 6 Battery Installation 3 6 Chapter 4 BIOS 4 1 Introduction 4 1 Starting BIOS GUI Setup Utility 4 1 How To Change the Configuration Data 4 2 How to Start the Setup Utility 4 2 4 2 System...

Page 13: ...rformance Mode 4 8 Intel R SpeedStep tm 4 8 Turbo Mode 4 9 Platform PL1 Enable 4 9 Platform PL2 Enable 4 9 Power Limit 4 Override 4 9 C states 4 9 Enhanced C states 4 9 C State Auto Demotion 4 9 C State Un demotion 4 9 Package C State Demotion 4 10 Package C State Un Demotion 4 10 IO MWAIT Redirection 4 10 Package C State Limit 4 10 Package C State Workaround 4 10 GT Power Management 4 10 4 4 Memo...

Page 14: ...5 Change Settings 4 15 Serial Port Console Redirection 4 15 COM 1 4 15 Console Redirection 4 15 System Agent SA Configuration 4 19 GMM Device B0 D8 F0 4 21 X2APIC Opt Out 4 21 Graphics Configuration 4 21 Graphics Turbo IMON Current 4 22 Skip Scanning of External Gfx Card 4 22 Primary Display 4 22 Select PCIE Card 4 22 External Gfx Card Primary Display Configuration 4 22 Internal Graphics 4 22 GTT ...

Page 15: ...on 4 28 Legacy USB Support 4 28 XHCI Hand Off 4 28 PCIe PCI PnP Configuration 4 30 Security 4 32 Administrator Password 4 32 User Password 4 32 Secure Boot 4 33 Attempt Secure Boot 4 33 Secure Boot Mode 4 33 CSM Support 4 33 Key Management 4 34 Provision Factory Default Keys 4 34 Install Factory Default Keys 4 34 Enroll Efi Image 4 34 Save All Secure Boot Variables 4 34 Platform Key PK 4 34 Delete...

Page 16: ...0 NETWORK Drive BBS Priorities 4 40 Boot Override 4 40 SMI USB DISK 1100 4 41 Launch EFI Shell from filesystem device 4 41 4 8 BIOS Update 4 42 Start Update 4 42 Appendix A BIOS Error Beep Codes A 1 BIOS Error Beep Codes A 1 Appendix B Software Installation Instructions B 1 Installing Drivers B 1 B 2 Configuring SuperDoctor 5 B 2 Appendix C UEFI BIOS Recovery Instructions C 1 An Overview to the UE...

Page 17: ...ability for overclocking platforms in a small form factor Please refer to our website http www supermicro com products for processor and memory support updates 1 2 Chipset Overview Intel B250 Express Chipset Features Direct Media Interface up 10 Gb s transfer Full Duplex Intel Matrix Storage Technology and Intel Rapid Storage Technology Intel Optane technology support Intel I O Virtualization VT d...

Page 18: ...e 1 Gigabit Ethernet Controller One 1 RJ 45 rear I O panel connector with Link and Activity LEDs I O Devices Hard Drive Connections SATA 3 0 6Gb s Six 6 I SATA 0 5 USB Devices Four 4 USB 3 0 and two 2 USB 2 0 ports on the rear I O panel Two 2 front accessible USB 2 0 ports on one header Two 2 front accessible USB 3 0 ports on one header Keyboard Mouse One shared PS 2 Keyboard Mouse port on the I O...

Page 19: ...mperature and CPU Temperature CPU 3 2 phase switching voltage regulator CPU System overheat LED and control CPU Thermal Trip support Thermal Monitor support Fan Control Fan status monitoring with 4 pin fan speed control Low noise fan speed control System Management PECI Platform Environment Configuration Interface 2 0 support System resource alert via SuperDoctor 5 SuperDoctor 5 Chassis Intrusion ...

Page 20: ...ture and CPU Temperature Once a voltage becomes unstable a warning is given or an error message is sent to the screen The user can adjust the voltage thresholds to define the sensitivity of the voltage monitor Fan Status Monitor and Control PC health monitoring in the BIOS can check the RPM status of the cool ing fans The onboard CPU and chassis fans are controlled by Thermal Management via SIO En...

Page 21: ...its hardware operating system and application software This enables the system to automatically turn on and off peripherals such as CD ROMs network cards hard disk drives and printers In addition to enabling operating system directed power management ACPI also provides a generic system event mechanism for Plug and Play and an operating system independent interface for configuration control ACPI le...

Page 22: ... supply that meets ATX power supply Specification 2 02 or above It must also be SSI compliant For more information please refer to the web site at http www ssiforum org Additionally in areas where noisy power transmission is present you may choose to install a line filter to shield the computer from noise It is recommended that you also install a power surge protector to help avoid problems caused...

Page 23: ...rboard Image Note All graphics shown in this manual were based upon the latest PCB Revision available at the time of publishing of the manual The motherboard you ve received may or may not look exactly the same as the graphics shown in this manual ...

Page 24: ...ealtek ALC888S FLASH SPI 128Mb SPI DVI Display Port HDMI DDI1 DDI2 DDI3 LPC DIMMA2 DIMMB2 TPM 2 0 Header COM1 Header NCT6792D B LPC I O PCIe x8 in x16 SLOT 6 or PCIe x16 SLOT 6 P33 PCIe3 0_x8 8 0GT s 1 X M 2 SOCKET SSD 8GT s PCIe3 0_x4 PCIe x1 SLOT Rear 8GT s PCIe3 0_x1 USB3 0 5Gbps 2 X USB 3 0 Rear 2 X USB 3 0 Header 5Gbps USB3 0 PS2 KB MS 6X SATA III SATA III 6Gb s Audio Jack Aduio Pin Header PC...

Page 25: ...T3 PCI E 3 0 X16 OFF DISABLE JI2C1 JI2C2 ON ENABLE HD AUDIO PCIE M 2 CONNECTOR 1 SYS_FAN2 USB 6 7 3 0 LAN CPU JPW1 DVI JPUSB1 USB0 1 WAKE UP HDMI DP DIMMB2 DIMMA2 2 3 DISABLE 1 2 ENABLE CPU_FAN1 JVR1 JPUSB1 JPW2 KB MOUSE LED1 REV 1 00 C7B250 CB MK DESIGNED IN USA MAC CODE BAR CODE BIOS LICENSE C A USB 4 5 3 0 USB 0 1 B1 2280 2260 2242 SYS_FAN1 JCMOS MH10 MH11 MH12 Important Notes to the User See C...

Page 26: ...U SLOT3 PCI E 3 0 X16 OFF DISABLE JI2C1 JI2C2 ON ENABLE HD AUDIO PCIE M 2 CONNECTOR 1 SYS_FAN2 USB 6 7 3 0 LAN CPU JPW1 DVI JPUSB1 USB0 1 WAKE UP HDMI DP DIMMB2 DIMMA2 2 3 DISABLE 1 2 ENABLE CPU_FAN1 JVR1 JPUSB1 JPW2 KB MOUSE LED1 REV 1 00 C7B250 CB MK DESIGNED IN USA MAC CODE BAR CODE BIOS LICENSE C A USB 4 5 3 0 USB 0 1 B1 2280 2260 2242 SYS_FAN1 JCMOS MH10 MH11 MH12 Jumper Description Default J...

Page 27: ...nector Required JSD1 SATA DOM Disk On Module Power Connector JSPDIF_OUT Sony Philips Digital Interface S PDIF Out Header JSTBY1 Standby Power Header JTPM1 Trusted Platform Module TPM Header KB MOUSE Keyboard Mouse LAN RJ45 Gigabit Ethernet Port PCIE M 2 CONNECTOR 1 PCI E M 2 Connector 1 small form factor devices and other portable devices for High speed NVMe SSDs SYS_FAN1 SYS_FAN2 System Fan Heade...

Page 28: ...1 12 Supermicro C7B250 CB MK Motherboard User s Manual Notes ...

Page 29: ...nstallation 2 1 Installation Components and Tools Needed Screws Phillips Head Screwdriver Intel LGA 1151 Processor DDR4 DIMMs PC Chassis Heatsink with Fan Power Supply Video Card Optional SATA USB Optical Drive Optional SATA Hard Disk Drive ...

Page 30: ...s edges only do not touch its components peripheral chips memory modules or gold contacts When handling chips or modules avoid touching their pins Put the motherboard and peripherals back into their antistatic bags when not in use For grounding purposes make sure your computer chassis provides excellent conductivity between the power supply the case the mount ing fasteners and the motherboard Use ...

Page 31: ... buy a CPU separately make sure that you use an Intel certified multi directional heatsink only Make sure to install the system board into the chassis before you install the CPU heatsink When receiving a server board without a processor pre installed make sure that the plastic CPU socket cap is in place and none of the socket pins are bent otherwise contact your retailer immediately Refer to the S...

Page 32: ... index finger to hold the CPU at the North center edge and the South center edge of the CPU 4 Align the CPU key that is the semi circle cutouts against the socket keys Once it is aligned carefully lower the CPU straight down into the socket Do not drop the CPU on the socket Do not move the CPU horizontally or vertically South Center Edge North Center Edge ...

Page 33: ...amage your CPU Instead open the load plate again and double check that the CPU is aligned properly CPU properly installed Load lever locked into place 5 Do not rub the CPU against the surface or against any pins of the socket to avoid damaging the CPU or the socket 6 With the CPU inside the socket inspect the four corners of the CPU to make sure that the CPU is properly installed 7 Use your thumb ...

Page 34: ...er con nector and are not interfered with other components 3 Inspect the CPU Fan wires to make sure that the wires are routed through the bottom of the heatsink 4 Remove the thin layer of the protective film from the heat sink Attention CPU overheating may occur if the protective film is not removed from the heatsink 5 Apply the proper amount of thermal grease on the CPU Note if your heatsink came...

Page 35: ...3 4 into the mounting holes until you hear a click Also make sure to orient each fastener so that the narrow end of the groove is pointing outward 8 Repeat Step 7 to insert all four heatsink fasteners into the mounting holes 9 Once all four fasteners are securely inserted into the mounting holes and the heatsink is properly installed on the motherboard connect the heatsink fan wires to the CPU Fan...

Page 36: ... done to the CPU or other components Active Heatsink Removal 1 Unplug the power cord from the power supply 2 Disconnect the heatsink fan wires from the CPU fan header 3 Use your finger tips to gently press on the fastener cap and turn it counterclockwise to make a 1 4 900 turn and pull the fastener upward to loosen it 4 Repeat step 3 to loosen all fas teners from the mounting holes 5 With all fast...

Page 37: ...nstalling DDR4 Memory Note Check the Supermicro website for recommended memory modules Attention Exercise extreme care when installing or removing DIMM modules to prevent any possible damage DIMM Installation 1 Insert the desired number of DIMMs into the memory slots starting with DIMMA2 see the next page for the location For the system to work properly please use the memory modules of the same ty...

Page 38: ... performance Notes Be sure to use memory modules of the same type same speed same frequency on the same motherboard Mixing of memory modules of different types and speeds is not allowed Due to memory allocation to system devices the amount of memory that remains available for operational use will be re duced when 4 GB of RAM is used The reduction in memory availability is disproportional See the f...

Page 39: ...51 PCI Enumeration Area 2 if needed Aligned on 256 MB boundary 512 MB 3 01 VGA Memory 16 MB 2 85 TSEG 1 MB 2 84 Memory available to OS and other applications 2 84 Memory Population Guidelines When installing memory modules the DIMM slots should be populated in the following order DIMMA2 DIMMB2 Always use DDR4 DIMM modules of the same size type and speed Mixed DIMM speeds can be installed However a...

Page 40: ... 1 B1 2280 2260 2242 SYS_FAN1 JCMOS MH10 MH11 MH12 Location of Mounting Holes Attention 1 To avoid damaging the motherboard and its compo nents please do not use a force greater than 8 lb inch on each mount ing screw during motherboard installation 2 Some components are very close to the mounting holes Please take precautionary measures to avoid damaging these components when installing the mother...

Page 41: ...offs in the chassis as needed 5 Install the motherboard into the chassis carefully to avoid damaging other motherboard components 6 Using the Phillips screwdriver insert a Phillips head 6 screw into a mounting hole on the motherboard and its matching mounting hole on the chassis 7 Repeat Step 5 to insert 6 screws into all mounting holes 8 Make sure that the motherboard is securely placed in the ch...

Page 42: ...2 USB 6 7 3 0 LAN CPU JPW1 DVI JPUSB1 USB0 1 WAKE UP HDMI DP DIMMB2 DIMMA2 2 3 DISABLE 1 2 ENABLE CPU_FAN1 JVR1 JPUSB1 JPW2 KB MOUSE LED1 REV 1 00 C7B250 CB MK DESIGNED IN USA MAC CODE BAR CODE BIOS LICENSE C A USB 4 5 3 0 USB 0 1 B1 2280 2260 2242 SYS_FAN1 JCMOS MH10 MH11 MH12 2 6 Connector and I O Ports The I O ports are color coded in conformance with the industry standards See the figure below...

Page 43: ...l USB 3 0 4 D Back panel USB 3 0 5 E Back panel USB 3 0 6 F Back panel USB 3 0 7 G USB 2 0 Header 2 3 H USB 3 0 Header 8 9 Universal Serial Bus USB Four Universal Serial Bus 3 0 ports 4 5 6 7 and two 2 USB 2 0 ports 0 1 are located on the I O back panel In addition one USB 3 0 header two ports 8 9 and one USB 2 0 header two ports 2 3 are also located on the motherboard to provide front chassis acc...

Page 44: ...igh Definition Audio HD Audio This motherboard features a 7 1 2 Channel High Definition Audio HDA codec that provides 10 DAC channels The HD Audio connections simultane ously supports multiple streaming 7 1 sound playback with two channels of independent stereo output through the front panel stereo out for front rear center and subwoofer speakers Use the Advanced software included in the CD ROM wi...

Page 45: ...l This connector is used to display both high definition video and digital sound through an HDMI capable display using a single HDMI cable not included DVI Port A DVI video only port is located on the I O back panel Use this port to connect to a compatible DVI Digital Visual Interface display VESA DisplayPort DisplayPort develped by the VESA consortium delivers digital display at a fast refresh ra...

Page 46: ... HDMI DP DIMMB2 DIMMA2 2 3 DISABLE 1 2 ENABLE CPU_FAN1 JVR1 JPUSB1 JPW2 KB MOUSE LED1 REV 1 00 C7B250 CB MK DESIGNED IN USA MAC CODE BAR CODE BIOS LICENSE C A USB 4 5 3 0 USB 0 1 B1 2280 2260 2242 SYS_FAN1 JCMOS MH10 MH11 MH12 Front Control Panel JF1 contains header pins for various buttons and indicators that are normally located on a control panel at the front of the chassis These connectors are...

Page 47: ...uding IDE SATA activities See the table on the right for pin definitions HDD LED Pin Definitions JF1 Pin Definition 13 5V 14 HD Active NIC1 LAN The NIC Network Interface Controller LED connection for LAN port 1 is located on pins 11 and 12 of JF1 Attach an LED indicator to this header to display net work activity Refer to the table on the right for pin definitions LAN LED Pin Definitions JF1 Pin D...

Page 48: ... con figured to function as a suspend button with a setting in the BIOS see Chapter 4 To turn off the power in the suspend mode press the button for at least 4 seconds Refer to the table on the right for pin definitions Power Button Pin Definitions JF1 Pin Definition 1 PWRBTN 2 GND Reset Button The Reset Button connection is located on pins 3 and 4 of JF1 Attach it to a hardware reset switch on th...

Page 49: ... BIOS LICENSE C A USB 4 5 3 0 USB 0 1 B1 2280 2260 2242 SYS_FAN1 JCMOS MH10 MH11 MH12 2 7 Connecting Cables This section provides brief descriptions and pinout definitions for onboard headers and connectors Be sure to use the correct cable for each header or connector A 24 Pin ATX Main PWR B 8 Pin PWR ATX Power 24 pin Connector Pin Definitions JPW1 Pin Definition Pin Definition 13 3 3V 1 3 3V 14 1...

Page 50: ... CODE BIOS LICENSE C A USB 4 5 3 0 USB 0 1 B1 2280 2260 2242 SYS_FAN1 JCMOS MH10 MH11 MH12 Fan Header Pin Definitions Pin Definition 1 Ground Black 2 2 5A 12V Red 3 Tachometer 4 PWM_Control Fan Headers Your motherboard has three fan headers SYS_FAN 1 2 CPU_FAN 1 These fans are 4 pin fan headers Although pins 1 3 of the fan headers SYS_FAN 1 2 are backward compatible with the traditional 3 pin fans...

Page 51: ... USB 6 7 3 0 LAN CPU JPW1 DVI JPUSB1 USB0 1 WAKE UP HDMI DP DIMMB2 DIMMA2 2 3 DISABLE 1 2 ENABLE CPU_FAN1 JVR1 JPUSB1 JPW2 KB MOUSE LED1 REV 1 00 C7B250 CB MK DESIGNED IN USA MAC CODE BAR CODE BIOS LICENSE C A USB 4 5 3 0 USB 0 1 B1 2280 2260 2242 SYS_FAN1 JCMOS MH10 MH11 MH12 A COM1 B Speaker Header Serial Port There is one serial COM port header on the motherboard See the table on the right for ...

Page 52: ... X NIC 1 PWR LED HDD LED JF1 USB 2 3 USB 8 9 3 0 2 3 BIOS RECOVERY 1 2 NORMAL JBR1 WATCH DOG 1 2 RST 2 3 NMI JWD1 JBR1 JPME2 AUDIO FP COM1 JD1 SPEAKER 1 4 JD1 JSD1 JWD1 JL1 JL1 CHASSIS INTRUSION 2 3 ME MANUFACTURING MODE JPME2 1 2 NORMAL I SATA5 I SATA4 I SATA3 I SATA2 I SATA1 I SATA0 PCH SLOT1 PCI E 3 0 X1 JBT1 PCH SLOT2 PCI E 3 0 X4 J9702 JSTBY1 J9701 JI2C1 JI2C2 JSPDIF_OUT 5V STBY POWER JSTBY1 ...

Page 53: ...UDIO PCIE M 2 CONNECTOR 1 SYS_FAN2 USB 6 7 3 0 LAN CPU JPW1 DVI JPUSB1 USB0 1 WAKE UP HDMI DP DIMMB2 DIMMA2 2 3 DISABLE 1 2 ENABLE CPU_FAN1 JVR1 JPUSB1 JPW2 KB MOUSE LED1 REV 1 00 C7B250 CB MK DESIGNED IN USA MAC CODE BAR CODE BIOS LICENSE C A USB 4 5 3 0 USB 0 1 B1 2280 2260 2242 SYS_FAN1 JCMOS MH10 MH11 MH12 A Standby Power B PCI E M 2 Connector Standby Power Header The Standby Power header is l...

Page 54: ..._FAN1 JCMOS MH10 MH11 MH12 A AUDIO FP B TPM Header Front Panel Audio Header AUDIO FP A 10 pin Audio header is supported on the motherboard This header allows you to connect the motherboard to a front panel audio control panel if needed Connect an audio cable to the audio header to use this feature not supplied See the table on the right for pin defini tions for the header 10 in Audio Pin Definitio...

Page 55: ...ure Mode JPME2 Jumper Settings Pin Definition 1 2 Normal Default 2 3 Manufacture Mode JTPM1 RST PWR ON X OH FF X NIC 1 PWR LED HDD LED JF1 USB 2 3 USB 8 9 3 0 2 3 BIOS RECOVERY 1 2 NORMAL JBR1 WATCH DOG 1 2 RST 2 3 NMI JWD1 JBR1 JPME2 AUDIO FP COM1 JD1 SPEAKER 1 4 JD1 JSD1 JWD1 JL1 JL1 CHASSIS INTRUSION 2 3 ME MANUFACTURING MODE JPME2 1 2 NORMAL I SATA5 I SATA4 I SATA3 I SATA2 I SATA1 I SATA0 PCH ...

Page 56: ...D1 REV 1 00 C7B250 CB MK DESIGNED IN USA MAC CODE BAR CODE BIOS LICENSE C A USB 4 5 3 0 USB 0 1 B1 2280 2260 2242 SYS_FAN1 JCMOS MH10 MH11 MH12 JCMOS JBT1 Clear CMOS and JBT1 are used to clear the saved system setup con figuration stored in the CMOS chip To clear the contents of the CMOS using JBT1 short the two pads of JBT1 with metallic conductor such as a flathead screwdriver JCMOS works the sa...

Page 57: ...1 REV 1 00 C7B250 CB MK DESIGNED IN USA MAC CODE BAR CODE BIOS LICENSE C A USB 4 5 3 0 USB 0 1 B1 2280 2260 2242 SYS_FAN1 JCMOS MH10 MH11 MH12 A Watch Dog Timer B BIOS Recovery Switch BIOS Recovery Jumper The BIOS Recovery Jumper JBR1 is a slide switch that is used to enable or disable the BIOS Recovery feature of the motherboard See Appendix D for details BIOS Recovery JBR1 Switch Settings State ...

Page 58: ...HD AUDIO PCIE M 2 CONNECTOR 1 SYS_FAN2 USB 6 7 3 0 LAN CPU JPW1 DVI JPUSB1 USB0 1 WAKE UP HDMI DP DIMMB2 DIMMA2 2 3 DISABLE 1 2 ENABLE CPU_FAN1 JVR1 JPUSB1 JPW2 KB MOUSE LED1 REV 1 00 C7B250 CB MK DESIGNED IN USA MAC CODE BAR CODE BIOS LICENSE C A USB 4 5 3 0 USB 0 1 B1 2280 2260 2242 SYS_FAN1 JCMOS MH10 MH11 MH12 A USB Wake Up USB Wake Up Use jumper JPUSB to activate the wake up function of the U...

Page 59: ...A USB 4 5 3 0 USB 0 1 B1 2280 2260 2242 SYS_FAN1 JCMOS MH10 MH11 MH12 A LAN LEDs B PWR LED LAN LEDs One LAN port is located on the I O backpanel of the motherboard This Ethernet LAN port has two LEDs Light Emitting Diode The yellow LED indi cates activity while the Link LED may be green amber or off to indicate the speed of the connections See the ta bles on the right for more information 2 9 Onbo...

Page 60: ...BLE HD AUDIO PCIE M 2 CONNECTOR 1 SYS_FAN2 USB 6 7 3 0 LAN CPU JPW1 DVI JPUSB1 USB0 1 WAKE UP HDMI DP DIMMB2 DIMMA2 2 3 DISABLE 1 2 ENABLE CPU_FAN1 JVR1 JPUSB1 JPW2 KB MOUSE LED1 REV 1 00 C7B250 CB MK DESIGNED IN USA MAC CODE BAR CODE BIOS LICENSE C A USB 4 5 3 0 USB 0 1 B1 2280 2260 2242 SYS_FAN1 JCMOS MH10 MH11 MH12 2 10 Hard Drive Connections SATA Connections I SATA0 I SATA5 Six SATA 3 0 connec...

Page 61: ... to unplug the power cable before installing or removing the components 2 Make sure that there are no short circuits between the motherboard and chassis 3 Disconnect all ribbon wire cables from the motherboard including those for the keyboard and mouse Also be sure to remove all add on cards 4 Install a CPU and heatsink be sure that it is fully seated and then connect the chassis speaker and the p...

Page 62: ...the slots 2 You should be using unbuffered Non ECC DDR4 up to 2400MHz memory recommended by the manufacturer Also it is recom mended that you use the memory modules of the same type and speed for all DIMMs in the system Do not use memory modules of different sizes different speeds and different types on the same motherboard 3 Check for bad DIMM modules or slots by swapping modules be tween slots t...

Page 63: ...ontacting Technical Support 2 BIOS upgrades can be downloaded from our website at http www supermicro com support bios Note Not all BIOS can be flashed Some cannot be flashed it depends on the boot block code of the BIOS 3 If you ve followed the instructions above to troubleshoot your system and still cannot resolve the problem then contact Supermi cro s technical support and provide them with the...

Page 64: ... from your bootable device or USB pen thumb drive Use the following format F ami bat BIOS ROM filename xxx Enter Note Always use the file named ami bat to update the BIOS and insert a space between ami bat and the filename The BIOS ROM filename will bear the motherboard name e g C7B250 and build version as the extension For example C7B250 115 When completed your system will automatically reboot If...

Page 65: ...Question I think my BIOS is corrupted How can I recover my BIOS Answer Please see Appendix C BIOS Recovery for detailed instructions 3 4 Battery Removal and Installation Battery Lock Battery Proper Battery Disposal Attention Please handle used batteries carefully Do not damage the battery in any way a damaged battery may release hazardous materials into the environment Do not discard a used batter...

Page 66: ...urchase is required before any warranty service will be rendered You can obtain service by calling your vendor for a Returned Merchandise Authorization RMA number For faster service you may also obtain RMA authoriza tions online http www supermicro com RmaForm When you return the motherboard to the manufacturer the RMA number should be prominently displayed on the outside of the shipping carton an...

Page 67: ...e UEFI BIOS Re covery Instructions in Appendix C Starting BIOS GUI Setup Utility To enter the AMI BIOS GUI Setup Utility screens press the Delete key while the system is booting up Note In most cases the Delete key is used to invoke the AMI BIOS setup screen Each BIOS menu option is described in this manual The Main BIOS Setup screen has two main areas The left area is the Main Navigation and the ...

Page 68: ...ty can be accessed by pressing Del at the appropriate time during system boot Note For the purposes of this manual options that are printed in Bold are default settings How to Start the Setup Utility Normally the only visible Power On Self Test POST routine is the memory test As the memory is being tested press the Delete key to enter the main menu of the AMI BIOS GUI Setup Utility From the Setup ...

Page 69: ...ion number Build Date and Time displays the BIOS build date and time CPU displays the CPU type speed stepping etc CPU Fan Data displays sensor type temperature speed System Date Click on the date to open the setup fields This item sets and displays the system date Click the up and down arrows to adjust the date System Time Click on the time to open the setup fields This item sets and displays the ...

Page 70: ...the detected CPU speed ID displays the unique CPU ID Stepping displays the processor stepping Number of Processors displays the number of cores detected Microcode Revision displays the CPU s microcode patch ver sion GT Info this item shows the processor s GT Information IGFX VBIOS Version this item shows the Integrated Graphics VBIOS version IGFX GOP Version this item shows the Integrated Graphics...

Page 71: ...he unique CPU ID Speed this item shows the detected CPU speed L1 Data Cache indicates if Level 1 cache is supported L1 Instruction Cache displays if Level 1 instruction cache is supported L2 Cache indicates if Level 2 cache is supported L3 Cache displays whether Level 3 cache is supported or not L4 Cache indicates if Level 4 cache is supported VMX indicates if VMX is supported SMX TXT indicates if...

Page 72: ...acent Cache Line Prefetch Available when supported by the CPU Select Enabled for the CPU to prefetch both cache lines for 128 bytes as comprised Select Disabled for the CPU to prefetch both cache lines for 64 bytes The options are Disabled and Enabled Intel VMX Virtualization Technology Available when supported by the CPU Select Enabled to use the Intel Virtualization Technology to allow one platf...

Page 73: ... Disabled Intel Trusted Executed Technology Intel TXT Trusted Execution Technology helps protect against software based attacks and ensures protection confidentiality and integrity of data stored or created on the system The options are Enabled and Disabled If Intel Trusted Execution Technology is Enabled the features Alias Check Request and DPR Memory Size are available for configuration Alias Ch...

Page 74: ...the FCLK frequency for early power on The options are Normal 800MHz 1GHz and 400MHz Power and Performance CPU Power Management Control Boot performance Mode This item enables the selection of the default CPU performance during system boot The options are Max Non Turbo Performance Max Bat tery and Turbo Performance Intel R SpeedStep tm Intel SpeedStep Technology allows the system to automatically a...

Page 75: ...op tion is disabled the BIOS will program the default values for Power Limit and Power Limit 4 Time Window The options are Disabled and Enabled C states C States architecture a processor power management platform devel oped by Intel can further reduce power consumption from the basic C1 Halt State state that blocks clock cycles to the CPU Select Enabled for CPU C Sates support The options are Enab...

Page 76: ...e this item to enable or disable the C State pre wake The options are Enabled and Disabled IO MWAIT Redirection When enabled this feature will map and send the IO read instructions to the IO registers The options are Disabled and Enabled Package C State Limit Select Auto for the AMI BIOS to automatically set the limit on the C State package register The options are C0 C2 C3 C6 C7 C7s and Auto Pack...

Page 77: ...will be clipped to its min max supported by the CPU The options are Default Max Frequency 100MHz through 1200MHz in increments of 50MHz 4 4 Memory Use this item to select the type speed of the memory installed The options are 1333 1600 1867 2133 2400 2667 2933 and 3200 All values are in MHz Default speed is auto detected The following information is displayed in this section Memory RC Version Memo...

Page 78: ...l This feature enables or disables the selected Channel B DIMM slot s The settings are Enable Both DIMMs Disable DIMM0 Disable DIMM1 and Disable Both DIMMs Force Single Rank When enabled only Rank0 will be use in each DIMM The settings are Disabled and Enabled Memory Remap PCI memory resources will overlap with the total physical memory if 4GB of memory or above is installed on the motherboard Whe...

Page 79: ...the box to display the OEM logo instead of the normal POST messages Bootup Num Lock Use this feature to set the Power on state for the Numlock key The options are Off and On Wait for F1 If Error Use this feature to force the system to wait until the F1 key is pressed if an error occurs The options are Disabled and Enabled Re try Boot If this item is enabled the BIOS will automatically reboot the s...

Page 80: ... system as soon as the user presses the power button The options are Instant Off and 4 Seconds Override AC Loss Policy Depend On Use this feature to set the power state after a power outage Select Stay Off for the system power to remain off after a power loss Se lect Power On for the system power to be turned on after a power loss Select Last State to allow the system to resume its last power stat...

Page 81: ...is item configures the IRQ setting for Serial Port 1 COM1 The options for Serial Port 1 are Auto IO 3F8h IRQ 4 IO 3F8h IRQ 3 4 5 6 7 9 10 11 12 IO 2F8h IRQ 3 4 5 6 7 9 10 11 12 IO 3E8h IRQ 3 4 5 6 7 9 10 11 12 and IO 2E8h IRQ 3 4 5 6 7 9 10 11 12 Serial Port Console Redirection COM 1 Console Redirection Select Enabled to enable COM Port 1 Console Redirection which will al low a client machine to b...

Page 82: ...sion speed may be required for long and busy lines The options are 9600 19200 38400 57600 and 115200 bits per second Data Bits Use this feature to set the data transmission size for Console Redirec tion The options are 7 Bits and 8 Bits Parity A parity bit can be sent along with regular data bits to detect data transmission errors Select Even if the parity bit is set to 0 and the number of 1 s in ...

Page 83: ...checked Resolution 100x31 Select Enabled for extended terminal resolution support The options are Enabled checked and Disabled unchecked Legacy OS Redirection Resolution Use this item to select the number of rows and columns used in Console Redirection for legacy OS support The options are 80x24 and 80x25 Putty KeyPad This feature selects the settings for the function keys and the key pad used for...

Page 84: ...able for user configuration Console Redirection Settings Out of Band Mgmt Port The feature selects a serial port in a client server to be used by the Windows Emergency Management Services EMS to communicate with a remote host server The options are dependent on the avail able COM ports Terminal Type Use this feature to select the target terminal emulation type for Con sole Redirection Select VT100...

Page 85: ...ing when the receiving buffer is full Send a Start signal to start data sending when the receiving buffer is empty The options are None Hardware RTS CTS and Software Xon Xoff The setting for each these features is displayed Data Bits Parity Stop Bits System Agent SA Configuration The following will be displayed SA PCIe Code Version VT d Capability PEG Port Configuration PEG 0 1 0 Enable Root Port ...

Page 86: ...r has be globally unique within the chassis Valid range is from 0 8191 PEG 0 1 1 Enable Root Port Select Enable to activate the Root Port The options are Disabled Enabled and Auto Max Link Speed Select Auto Gen1 Gen2 or Gen3 to set the PEG Max Link Speed PEG1 Slot Power Limit Value This option sets the upper limit of the power supplied by the slot in Watts It is calculated by multiplying this valu...

Page 87: ...he power supplied by the slot in Watts It is calculated by multiplying this value by the Slot Power Limit Scale Valid range is from 0 255 GMM Device B0 D8 F0 This feature will enable disable the SA GMM device The options are Disabled and Enabled X2APIC Opt Out X2APIC an extension of the XAPIC architecture is designed to support 32 bit processor addressability X2APIC enhances the performance of int...

Page 88: ...External Gfx Card Primary Display Configuration Primary PEG This feature allows the user to select the primary PCI Express Graphics PEG slot The options are Auto PEG11 and PEG12 Primary PCIE This feature allows the user to specify which graphics card to be used as the primary graphics card The options are Auto PCIE1 PCIE2 PCIE3 PCIE4 PCIE5 PCIE6 PCIE7 PCIE8 PCIE9 PCIE10 PCIE11 PCIE12 PCIE13 PCIE14...

Page 89: ...er The options are Enabled and Disabled VDD Enable Activating this feature will force VDD in the BIOS The options are Dis abled and Enabled HDCP Support Activating this feature will enable HDCP High bandwidth Digital Content Protection BIOS support The options are Disabled and Enabled Algorithm Select either One Time or Periodic for HDCP re encryption flow PM Support Activating this feature will e...

Page 90: ...et the Active State Power Management ASPM to power manage the PCIe link during the various L states The options are Auto L0sL1 L1 L0s and Disabled PCIe Root Ports L1 Substates Use this feature to define which L1 substate to use The options are Disabled L1 1 L1 2 and L1 1 L1 2 PCH LAN Controller Use this feature to enable or disable the PCH LAN Controller The op tions are Disabled and Enabled HD Au...

Page 91: ... to 2 0 SATA and RST Configuration SATA Controllers Select Disabled to disable the onboard SATA Controllers The settings are Enabled and Disabled SATA Mode Selection This item selects the mode for the installed SATA drives The options are AHCI and Intel RST Premium SATA Controller Speed Use this option to specify the maximum speed the SATA controller can support The options are Default Gen 1 Gen 2...

Page 92: ...ce a SATA disk drive without shutting down the system The options are Enabled and Disabled Configured as eSATA This item displays the eSATA status for the detected hard drive Spin Up Device When this option is disabled all drives will spin up at boot When this option is enabled it will perform Staggered Spin Up on any drive this option is activated The settings are Enabled and Disabled SATA Device...

Page 93: ...tion for the PCH Firmware is displayed ME Firmware Version ME Firmware Mode ME Firmware SKU ME FW Image Re Flash This item will update the PCH Firmware from an image in a USB Flash drive attached to a USB port The options are Enabled and Disabled ...

Page 94: ...USB devices are not present If Disable is selected legacy USB devices will not be supported The options are Enabled Disabled and Auto XHCI Hand Off This item is a work around solution for operating systems that do not support XHCI Extensible Host Controller Interface hand off The XHCI ownership change should be claimed by the XHCI driver The options are Enabled and Disabled USB Mass Storage Driver...

Page 95: ...yboard and mouse during the Windows 7 installation since the native XHCI driver support is unavailable Use a SATA optical drive as a USB drive and USB CD DVD drives are not supported Disable this feature after the XHCI driver has been installed in Windows The options are Disabled and Enabled ...

Page 96: ...o Not Launch UEFI and Legacy Above 4GB MMIO BIOS Assignment Select Enable for remapping of BIOS above 4GB The options are Enabled and Disabled PCIe PCI PnP Configuration PCH SLOT1 PCI E 3 0 X1 OPROM PCH SLOT2 PCI E 3 0 X4 OPROM CPU SLOT3 PCI E 3 0 X16 OPROM Select Disabled to deactivate the selected slot Legacy to activate the slot in legacy mode and EFI to activate the slot in EFI mode The option...

Page 97: ... Firmware Interface for network stack support The options are Enabled and Disabled If this feature is enabled the two features below are available Ipv4 PXE Support Select Enabled to enable Ipv4 PXE Preboot Execution Environ ment for boot support If this feature is set to Disabled Ipv4 PXE boot option will not be supported The options are Enabled and Disabled Ipv6 PXE Support Select Enabled to enab...

Page 98: ...ed upon each system boot and will also have Administrator rights in the setup Passwords must be at least 3 and up to 20 characters long Administrator Password Use this feature to set the Administrator Password which is required to enter the BIOS setup utility The length of the password should be from 3 characters to 20 characters long User Password Use this feature to set the User Password which i...

Page 99: ...s disabled in the Setup utility The options are Disabled and Enabled Secure Boot Mode This feature allows selection of the Secure Boot Mode between Standard and Custom Selecting Custom enables users to change the Image Ex ecution Policy and manage Secure Boot Keys The options are Custom and Standard CSM Support Select enabled to support the Compatibility Support Module CSM which provides compatibi...

Page 100: ...Default Keys This option forces the system to install the factory default keys Click Yes or No Enroll Efi Image This option allows the image to run in Secure Boot Mode Enroll SHA256 Hash Certificate of the image into the Authorized Signature Database Save All Secure Boot Variables This option saves all revised Secure Boot settings Platform Key PK This item uploads and installs a secure Platform Ke...

Page 101: ...om a file When prompted select Yes to load Factory Defaults or No to load from a file Delete Authorized Signature This item deletes a previously installed Authorized Signature Authorized Signatures This item uploads and installs an Authorized Signature You may insert a factory default key or load from a file The file formats accepted are 1 Public Key Certificate a EFI Signature List b EFI CERT X50...

Page 102: ...insert a factory default key or load from a file When prompted select Yes to load Factory Defaults or No to load from a file Delete Authorized TimeStamps This item deletes a previously installed Forbidden Signature Authorized TimeStamps This item uploads and installs an Authorized Time Stamp You may insert a factory default key or load from a file The file formats accepted are 1 Public Key Certifi...

Page 103: ... are 1 Public Key Certificate a EFI Signature List b EFI CERT X509 DER Encoded c EFI CERT RSA2048 bin d EFI SERT SHA256 bin 2 EFI Time Based Authenticated Variable When prompted select Yes to load Factory Defaults or No to load from a file Append OsRecovery Signature This item uploads and adds an OSRecovery Signature into the Key Man agement You may insert a factory default key or load from a file...

Page 104: ...erature displays the CPU temperature detected by PECI System Temperature indicates the system internal tempera ture Peripheral Temperature displays the detected peripheral de vice temperature PCH Temperature indicates the detected PCH chip temperature System Health The following items will be displayed Voltage VCPU 12V VCCSA 5VCC VDIMM ...

Page 105: ...ll speed of 100 Pulse Width Modulation Duty Cycle for maximum cooling This setting is recommended for special system configuration or debugging Select Stable for the onboard fans to run at 50 of the Initial PWM Cycle in order to balance the needs between system cooling and power saving This setting is recommended for regular systems with normal hardware configurations Select Quiet to optimize for ...

Page 106: ...he options are Hard Disk CD DVD USB Hard Disk USB CD DVD USB Key USB Floppy USB LAN Network and Disabled USB Key Drive BBS Priorities Use this feature to specify the Boot Device Priority sequence from avail able USB Key Drives The options are SMI USB DISK 110 and Disable NETWORK Drive BBS Priorities Use this feature to specify the Boot Device Priority sequence from avail able Network Drives The op...

Page 107: ...l For the following options select OK to initiate otherwise click Cancel Save Changes and Reset This option will save the changes that have been made and will reboot the system Discard Changes and Reset This option will save the changes that have been made and will reboot the system Save Changes This option will save the changes but will remain in setup mode Discard Changes This option will discar...

Page 108: ...date enter the SuperFlash utility 2 At the prompt select Yes to reboot and configure the system to Flash mode Select No to cancel and view the BIOS information 3 After the system reboots to the flash mode the system is ready to flash the BIOS At the prompt select OK to continue 4 Select Select File and then in the pop up menu select General USB Flash Disk 1 00 5 Select the filename i e C7B250 CB M...

Page 109: ...ll ap pear to show the progress of the BIOS flash 7 If the flash is successful a pop up message will indicate the result Select OK to complete the BIOS flash and to reboot the system Go to the SYSTEM INFORMATION Motherboard page in the BIOS Setup to check for the correct BIOS version ...

Page 110: ...4 44 Supermicro C7B250 CB MK Motherboard User s Manual Notes ...

Page 111: ...curs you should consult with your system manufacturer for possible repairs These fatal errors are usually communicated through a series of audible beeps The numbers on the fatal error list correspond to the number of beeps for the corresponding error Connect an external speaker to hear the beep codes A 1 BIOS Error Beep Codes BIOS Error Beep Codes Beep Code LED Error Message Description 1 beep Ref...

Page 112: ...A 2 Supermicro C7B250 CB MK Motherboard User s Manual Notes ...

Page 113: ...upport manuals Driver Tool Installation Display Screen Note 1 Click the icons showing a hand writing on the paper to view the readme files for each item Click on a computer icon to the right of an item to install this item from top to the bot tom one at a time After installing each item you must reboot the system before proceeding with the next item on the list The bottom icon with a CD on it allo...

Page 114: ...omes in local and remote management versions and can be used with Nagios to maximize your system monitoring needs With SuperDoctor 5 Management Server SSM Server you can remotely con trol power on off and reset chassis intrusion for multiple systems with SuperDoctor 5 or IPMI SD5 Management Server monitors HTTP FTP and SMTP services to optimize the efficiency of your operation Note The default Use...

Page 115: ...architecture independent mechanism for add on card initialization to allow the UEFI OS loader which is stored in the add on card to boot up the system UEFI offers a clean hands off control to a computer system at bootup C 2 How to Recover the UEFI BIOS Image the Main BIOS Block A UEFI BIOS flash chip consists of a recovery BIOS block comprised of two boot blocks and a main BIOS block a main BIOS i...

Page 116: ...follow the instructions below 1 Using a different machine copy the Super ROM binary image file into the disc Root Directory of a USB device or a writeable CD DVD Note If you cannot locate the SUPER ROM file in your driver disk visit our website at www supermicro com to download the BIOS image into a USB flash device save in the root folder and rename it SUPER ROM for BIOS recovery use 2 Insert the...

Page 117: ...continue with BIOS Recovery select the item Proceed with flash update You will see the progress of BIOS Recovery as shown on the screens below 4 After locating the new BIOS binary image the system will enter the BIOS Recovery menu as shown below 6 After the BIOS Recovery process is complete click OK to reboot the system Note Do not interrupt the BIOS programming until it is com pleted ...

Page 118: ...C 4 Supermicro C7B250 CB MK Motherboard User s Manual Notes ...

Page 119: ... occur due to a software tool issue see image below or an unexpected power outage during BIOS updates BIOS Boot Block Corruption Occurrence When a BIOS boot block is corrupted due to an unexpected power out age or a software tool malfunctioning during BIOS updates you can still reboot the system by activating switch JBR1 on the motherboard When JBR1 is activated the system will boot from a backup ...

Page 120: ...ystem by switch JBR1 1 Power down the system 2 On switch JBR1 slide switch to ON and power on the system 3 Follow the BIOS recovery SOP listed in the previous chapter Appendix C 4 After completing the steps above power down the system 5 Turn OFF switch JBR1 and power on the system ...

Page 121: ... expected to result in significant injury or loss of life or catastrophic property damage Accordingly Supermicro disclaims any and all liability and should buyer use or sell such products for use in such ultra hazardous ap plications it does so entirely at its own risk Furthermore buyer agrees to fully indemnify defend and hold Supermicro harmless for and against any and all claims demands actions...

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