Supermicro A+ Server 2123BT-HNC0R User Manual Download Page 35

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Chapter 3: Maintenance and Component Installation

Memory Installation

Memory Support

The H11DST-B supports Up to 2 TB of ECC DDR4 2666 MHz speed, RDIMM/LRDIMM/3DS/
NVDIMM memory in sixteen slots. Refer to the table below for additional memory information.
Check the Supermicro website for possible updates to memory support.

Processors and their Corresponding

Memory Modules

CPU#

Channel Channel Channel

Channel

4 DIMMS

CPU1

8 DIMMS

CPU1

8 DIMMS

CPU1

CPU2

16 DIMMS

CPU1

CPU2

Populating RDIMM/RDIMM 3DS/LRDIMM/LRDIMM 3DS DDR4

Memory Modules

Type

DIMM

Population

Maximum DIMM

Capacity (GB)

Maximum Frequency

(MHz)

1 Channel 8 Channel

RDIMM

16GB

128GB

2666

32GB

256GB

2666

LRDIMM

64GB

512GB

2666

128GB

1TB

2666

LRDIMM 3DS

2R2H

64GB

512GB

2666

2R4H

128GB

1TB

2666

Summary of Contents for A+ Server 2123BT-HNC0R

Page 1: ...USER S MANUAL Revision 1 0c A Server 2123BT HTR 2123BT HNR 2123BT HNC0R...

Page 2: ...a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the manufacturer s instruction manual may cause harmful i...

Page 3: ...user s manual for your server Supermicro product manuals http www supermicro com support manuals Product drivers and utilities https www supermicro com wftp Product safety info http www supermicro co...

Page 4: ...erence 15 System Block Diagram 16 Chapter 2 Server Installation 2 1 Overview 17 2 2 Preparing for Setup 17 Choosing a Setup Location 17 Rack Precautions 17 Server Precautions 18 Rack Mounting Consider...

Page 5: ...36 DIMM Installation 37 DIMM Removal 37 Motherboard Battery 38 3 4 Chassis Components 39 Storage Drives 39 Drive Carrier Indicators 39 Drive Configuration 40 Installing Drives 41 Installing an M 2 So...

Page 6: ...2 Main Setup 61 6 3 Advanced Setup Configurations 62 6 4 IPMI 76 6 5 Event Logs 79 6 6 Security 81 6 7 Boot 84 6 8 Save Exit 86 6 9 BIOS Update Using IPMI 88 Appendix A BIOS Error Codes Appendix B St...

Page 7: ...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 Technic...

Page 8: ...are included with the system are listed below Main Parts List Description Part Number Quantity Power supply PWS 2K22A 1R HTR HNC0R PWS 2K60A 1R HNR 2 Power cord Type IEC C14 to C13 HTR HNC0R Type IEC...

Page 9: ...our NVMe SAS drives and two SAS drives Optional Each node supports one NVMe SATA M 2 mounted on the motherboard suitable for OS Power 2200 W for HTR and HNC0R models 2600 W for HNR model 80Plus Titani...

Page 10: ...e used to locate the server in large racks and server banks Information LED Status Description Continuously on and red An overheat condition has occurred This may be caused by cable congestion Blinkin...

Page 11: ...l panel for each node Hot swap Storage Drives 24 Front Chassis Features Item Feature Description 1 Control Panels Controls a node as labeled A Drive bays Six drives controlled by node A B Drive bays S...

Page 12: ...cards Unlabeled I O ports Described in Section 4 2 SIOM Networking Add on Card Options Speed Ports Add on Card Part Number GbE Two RJ45 AOC MGP i2M Four RJ45 AOC MGP i4M 10 G SFP Two SFP AOC MTGN i2SM...

Page 13: ...ction Figure 1 4 Node Tray Node Trays The chassis contains four separate computing node drawers each with its own motherboard Note Graphics in this manual are for illustration Your components may look...

Page 14: ...VGA UID SW UID LED SIOM JPB1 JPG1 COM1 JWD1 JDBG1 FAN3 FAN4 JTPM1 JF2 SXB1 SXB2 JF1 BT1 SXB3 JSD1 SATA6 JSDCARD1 J2 PCI E SATA M 2 USB3 JBT1 P2 DIMME1 P2 DIMMF1 P2 DIMMG1 P2 DIMMH1 P1 DIMMB1 P1 DIMMC...

Page 15: ...dd on module supported by CPU1 SXB1 PCI E 3 0 x4 slot supported by CPU2 and SATA connections SATA0 5 by CPU1 SXB2 PCI E 3 0 x24 slot supported by CPU2 SXB3 PCI E 3 0 x16 left hand riser slot supported...

Page 16: ...R4 LPC BMC ROM 32MB TPM BIOS ROM 16MB MUX SPI SPI CPU0 P3 15 0 RMII JSIOM1 SXB4 CPU1 P0 15 8 CPU0 P2 15 0 Micro SD CPU0 USB2 0_1 0 xGMI SXB3 SXB2 DDR4 DIMM 0 DDR4 DIMM 0 DDR4 DIMM 0 DDR4 DIMM 0 DDR4 D...

Page 17: ...ease read this section in its entirety before you begin the installation Choosing a Setup Location The system should be situated in a clean dust free area that is well ventilated Avoid areas where hea...

Page 18: ...ver from power surges and voltage spikes and to keep your system operating in case of a power failure Allow any drives and power supply modules to cool before touching them When not servicing always k...

Page 19: ...onnections other than the direct connections to the branch circuit i e the use of power strips etc To prevent bodily injury when mounting or servicing this unit in a rack you must take special precaut...

Page 20: ...Note This rail will fit a rack between 28 and 33 5 deep Overview of the Rack Rails The package includes two rail assemblies Each is specifically designed for the left or right side of the chassis and...

Page 21: ...cure the rail to the rack with screws 3 Pull out the rear section of the outer rail adjusting the length until it fits within the posts of the rack and align the small hooks with the appropriate holes...

Page 22: ...e rack must be bolted to the floor before you slide the unit out for servicing Failure to stabilize the rack can cause the rack to tip over Chassis Installation Slide the chassis into the rack so that...

Page 23: ...ase follow the procedures given in each section 3 1 Removing Power Before performing some setup or maintenance tasks use the following procedure to ensure that power has been removed from the system R...

Page 24: ...to power down the node 2 Remove any cables attached to the node 3 Pull down the node release handle and use both handles to slide the node out the chassis rear Figure 3 1 Removing a Node Tray Node Ha...

Page 25: ...as fans by removing the cover Removing the Chassis Cover The chassis top cover can be lifted off after removing two screws Caution Except for short periods of time do not operate the server without th...

Page 26: ...anti static equipment such as gloves or wrist strap and follow precautions to avoid damage caused by ESD Do not touch the underside of the CPU Improper installation or socket misalignment can cause se...

Page 27: ...moving power from the system as described in Section 3 1 1 Use a Torx T20 driver to loosen the screws holding down Force Frame in the sequence of 3 2 1 The screws are numbered on the Force Frame next...

Page 28: ...it to a position so you can do the next step of removing the External Cap Note The Rail Frame is spring loaded so keep a secure grip on it as you lift it so it does not snap up Figure 3 3 Raising the...

Page 29: ...me CPU Package assembly from its shipping tray and while gripping the handle align the flanges of the Carrier Frame onto the rails of the Rail Frame so its pins will be at the bottom when the Rail Fra...

Page 30: ...abs marked Remove at the middle of the cap and pull vertically upwards to remove the PnP Cover Cap Caution The exposed socket contacts are extremely vulnerable and can be damaged easily Do not touch o...

Page 31: ...f torque using a Torx T20 driver The Force Frame secures both the Rail Frame and CPU Package Caution The screw tightening sequence of 1 2 3 must be executed in the proper sequence to avoid catasrophic...

Page 32: ...A Server AS 2123BT Hxxx User s Manual 32 Figure 3 13 Heatsink for CPU1 SNK P0062PW Figure 3 14 Heatsink for CPU2 SNK P0062PM...

Page 33: ...on the socket frame 12 Using a diagonal pattern tighten the four screws down on the heatsink evenly till it is secure The processor and heatsink installation is complete Repeat this procedure for any...

Page 34: ...or installing the force frame onto the socket unscrewing the plate in the 3 2 1 screw order and lift the force frame to the vertical position Caution The screw tightening sequence of 1 2 3 must be exe...

Page 35: ...orresponding Memory Modules CPU Channel Channel Channel Channel 1 2 3 4 5 6 7 8 4 DIMMS CPU1 B1 D1 F1 H1 8 DIMMS CPU1 A1 B1 C1 D1 E1 F1 G1 H1 8 DIMMS CPU1 B1 D1 F1 H1 CPU2 B1 D1 F1 H1 16 DIMMS CPU1 A1...

Page 36: ...Always use DDR4 DIMM modules of the same type size and speed in a node The motherboard will support odd numbered modules 1 or 3 modules installed However to achieve the best memory performance a bala...

Page 37: ...bs outwards on both ends of the DIMM slot to unlock it Release Tabs Notches Press both notches straight down into the memory slot 2 Align the key of the DIMM with the receptive point on the memory slo...

Page 38: ...ing the Battery Begin by removing power from the system as described in section 3 1 1 Push aside the small clamp that covers the edge of the battery When the battery is released lift it out of the hol...

Page 39: ...e table below for details Hard Drive Carrier LED Indicators Color Blinking Pattern Behavior for Device Activity LED Blue Solid On SAS NVMe drive installed Blue Blinking I O activity Status LED Red Sol...

Page 40: ...er Locations in the Chassis Node B controls drives B1 B2 B3 B4 B5 and B6 Node D controls drives D1 D2 D3 D4 D5 and D6 Node A controls drives A1 A2 A3 A4 A5 and A6 Node C controls drives C1 C2 C3 C4 C5...

Page 41: ...e button on the drive carrier This extends the drive carrier handle 2 Use the handle to pull the carrier out of the chassis 3 Remove the dummy drive from the carrier Figure 3 18 Caution Except for sho...

Page 42: ...he drive align with those in the carrier 2 Secure the hard drive into the carrier with the screws Figure 3 22 Installing the Hard Drive 3 Insert the drive and carrier into its bay vertically keeping t...

Page 43: ...write intensive applications Also there are some thermal limitations Please contact Supermicro Support before installing an M 2 device The motherboard can accommodate an M 2 solid state drive SSD The...

Page 44: ...brackets For the right side looking from the node rear remove the three screws on the right For the left side remove the three screws on the left 3 Remove the blank PCI shield from the bracket 4 Slid...

Page 45: ...y a system integrator or manufacturer Installing the SIOM Card Before installing the motherboard into the node drawer 1 Insert the SIOM card into the motherboard as shown 2 Secure it with a screw Note...

Page 46: ...h the same type and model Figure 3 26 System Fan Placement Changing a System Fan 1 Determine which fan is failing If possible use IPMI If not remove the chassis cover while the power is on and examine...

Page 47: ...the vacant space in the housing while making sure the arrows on the top of the fan indicating air direction point in the same direction as the arrows on the other fans 8 Put the fan housing back into...

Page 48: ...ply when the power is off An illuminated green light indicates that the power supply is operating Replacing the Power Supply 1 Unplug the AC cord from the module to be replaced 2 Push the release tab...

Page 49: ...There are two fan headers on the motherboard These are 4 pin fan headers pins 1 3 are backward compatible with traditional 3 pin fans The onboard fan speeds are controlled by Thermal Management via Ha...

Page 50: ...H11DST B has six available SATA 3 0 ports SATA0 5 via a riser card supported by CPU1 There is also one SATA port on the motherboard SATA6 located next to the SATA DOM Power JSD1 The yellow SATA6 conne...

Page 51: ...y Expansion Slots Name Description SXB1 PCI E 3 0 x4 Slot Supported by CPU2 and SATA Connections SATA0 5 by CPU1 SXB2 PCI E 3 0 x24 Slot Supported by CPU2 SXB3 PCI E 3 0 x16 Left Hand Riser Slot Suppo...

Page 52: ...identifier UID switch toggles the UID LED indicators on or off These indicators can be used to identify the node for troubleshooting or service Network Ports The primary LAN ports are provided by mean...

Page 53: ...ns Jumper Setting 3 2 1 3 2 1 CMOS Clear JBT1 is used to clear CMOS which will also clear any passwords Instead of pins this jumper consists of contact pads to prevent accidentally clearing the conten...

Page 54: ...Dog must also be enabled in BIOS The default setting is Reset Note When Watch Dog is enabled the user needs to write their own application software to disable it Watch Dog Jumper Settings Jumper Sett...

Page 55: ...inking BMC Initializing Onboard Power LED PWR_OK LED3 is an onboard Power LED When this LED is lit the system is turned on and all the system power rails are ready When the system is turned off or any...

Page 56: ...nstallation ISO file That might be a DVD perhaps using an external USB SATA DVD drive or a USB flash drive or the IPMI KVM console 2 Go to the Supermicro web page for your motherboard and click on Dow...

Page 57: ...he bottom left corner Figure 5 2 Load Driver Link To load the driver browse the USB flash drive for the proper driver files Choose the SATA sSATA AHCI driver indicated then choose the storage drive on...

Page 58: ...preferred Another option is to go to the Supermicro website at http www supermicro com products Find the product page for your motherboard and Download the Latest Drivers and Utilities Insert the flas...

Page 59: ...rs such system health information as CPU temperature system voltages system power consumption fan speed and provides alerts via email or Simple Network Management Protocol SNMP SuperDoctor 5 comes in...

Page 60: ...he large left frame displays options can be configured by the user These are blue When an option is selected it is highlighted in white Settings printed in Bold are the default values In the left fram...

Page 61: ...ate and time Highlight System Date or System Time using the arrow keys Enter new values using the keyboard Press the Tab key or the arrow keys to move between fields The date must be entered in MM DD...

Page 62: ...his feature to select the screen display between the POST messages and the OEM logo upon bootup Select Disabled to display the POST messages Select Enabled to display the OEM logo instead of the norma...

Page 63: ...ation Watch Dog Function If enabled the Watch Dog Timer will allow the system to reset or generate NMI based on jumper settings when it is expired for more than 5 minutes The options are Disabled and...

Page 64: ...e or disable the installed security device The options are Disable and Enable Pending Operation This feature wil schedule an operation for the the security device select TPM Clear to clear any pending...

Page 65: ...le or disable the L1 L2 Stream Hardware Prefetcher The options are Auto Disabled and Enabled SVM Mode This setting Enables or Disables CPU Virtualization SMEE This setting Enables or Disables secure m...

Page 66: ...n memory populations and it will be ignored if the memory doesn t support the selected option Options include None Channel Die Socket and Auto Memory Interleaving Size This setting controls the memory...

Page 67: ...port address and the Interrupt Request address of a serial port specified by the user Select Auto to allow the BIOS to automatically assign the base I O and IRQ address The options are Auto IO 3F8h I...

Page 68: ...ion 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 Redirection...

Page 69: ...tion Select Enabled to enable SOL console redirection support for a serial port specified by the user The options are Enabled and Disabled If the item above set to Enabled the following items will bec...

Page 70: ...ication Select 2 Stop Bits if slower devices are used The options are 1 and 2 Flow Control Use this feature to set the flow control for Console Redirection to prevent data loss caused by buffer overfl...

Page 71: ...ion support for a serial port specified by the user The options are Enabled and Disabled If the item above set to Enabled the following items will become available for user s configuration Console Red...

Page 72: ...ddress space only if the system supports 64 bit PCI decoding SR IOV Support If the system has SR IOV capable PCI E devices this setting will Enable or Disable the Single Root IO Virtualization Support...

Page 73: ...AN1 Option ROM Use this setting to select which firmware function is to be loaded for onboard LAN1 on the system Options include Disabled PXE and iSCSI Onboard LAN1 Option ROM Use this setting to sele...

Page 74: ...llows you to Enable or Disable IPv6 HTTP boot support If disabled IPv6 HTTP boot support will not be available PXE Boot Wait Time This setting allows you to set in a number field the wait time to pres...

Page 75: ...his feature allows the user to enter the unique name of the iSCSI Initiator in IQN format Once the name of the iSCSI Initiator is entered into the system configure the proper settings for the followin...

Page 76: ...Management Controller This item indicates the status of the IPMI firmware installed in your system System Event Log Enabling Disabling Options SEL Components Select Enabled for all system event loggi...

Page 77: ...g is Failover IPMI Network Link Status This item displays the IPMI Network Link status The default setting is Shared LAN If the item above is set to Yes the following item will become available for co...

Page 78: ...ort The options are Enabled and Disabled Configuration Address Source This feature allows the user to select the source of the IP address for this computer If Static is selected you will need to know...

Page 79: ...nabling Disabling Options SMBIOS Event Log Select Enabled to enable SMBIOS System Management BIOS Event Logging during system boot The options are Enabled and Disabled Erasing Settings Erase Event Log...

Page 80: ...nabled MECI Multiple Event Count Increment Enter the increment value for the multiple event counter Enter a number between 1 to 255 The default setting is 1 METW Multiple Event Count Time Window This...

Page 81: ...ing User password Password Check Select Setup for the system to check for a password at Setup Select Always for the system to check for a password at bootup or upon entering the BIOS Setup utility The...

Page 82: ...the image to run in Secure Boot Mode and enroll SHA256 hash of the binary into an Authorized Signature Database db Save All Secure Boot Variables This feature allows the user to decide if all secure...

Page 83: ...the DBX from the manufacturer s defaults to the existing DBX Select No to load the DBX from a file The options are Yes and No Authorized TimeStamps Set New Key Select Yes to load the DBT from the manu...

Page 84: ...an EFI OS after the boot failed from the legacy boot order FIXED BOOT ORDER Priorities Section This option prioritizes the order of bootable devices that the system to boot from Press Enter on each e...

Page 85: ...Chapter 6 BIOS 85 Hard Disk Drive BBS Priorities This feature allows the user to specify which hard disk drive devices are boot devices...

Page 86: ...ot the computer Select Discard Changes and Exit from the Exit menu and press Enter Save Changes and Reset Select this option to reset the system after saving the changes Save Changes After completing...

Page 87: ...Defaults from the Exit menu and press Enter This enables the user to save any changes to the BIOS setup for future use Restore User Defaults To set this feature select Restore User Defaults from the...

Page 88: ...ge Unzip and save it 2 Access the IPMI web interface Enter the IP address and log in The default username and password are ADMIN ADMIN For details on IPMI use the link above 3 Click the Maintenance ta...

Page 89: ...Upgrade Dialog Verify Date 6 In the Start Upgrade dialog make sure the three checkboxes are not checked and verify the date of the BIOS file you uploaded before proceeding 7 Click the Start Upgrade bu...

Page 90: ...occurs 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 on the fo...

Page 91: ...com support manuals AMI BIOS POST Codes User s Guide When BIOS performs the Power On Self Test it writes checkpoint codes to I O port 0080h If the computer cannot complete the boot process a diagnosti...

Page 92: ...r assistance Only certified technicians should attempt to install or configure components Read this appendix in its entirety before installing or configuring components in the Supermicro chassis These...

Page 93: ...o considere los riesgos de la corriente el ctrica y familiar cese con los procedimientos est ndar de prevenci n de accidentes Al final de cada advertencia encontrar el n mero que le ayudar a encontrar...

Page 94: ...en dient u zich bewust te zijn van de bij een elektrische installatie betrokken risico s en dient u op de hoogte te zijn van de standaard procedures om ongelukken te voorkomen Gebruik de nummers aan h...

Page 95: ...mentaci n Attention Avant de brancher le syst me sur la source d alimentation consulter les directives d installation Circuit Breaker Waarschuwing Raadpleeg de installatie instructies voordat u het sy...

Page 96: ...es del edificio Aseg rese de que el dispositivo de protecci n no sea superior a 250 V 20 A Attention Pour ce qui est de la protection contre les courts circuits surtension ce produit d pend de l insta...

Page 97: ...e energ a y del cable el ctrico quitado de los m dulos de fuente de alimentaci n antes de tener acceso el interior del chasis para instalar o para quitar componentes de sistema Attention Le syst me do...

Page 98: ...bels aangesloten op de voeding en van de behuizing te verwijderen Equipment Installation Warning Only trained and qualified personnel should be allowed to install replace or service this equipment War...

Page 99: ...tention Il est vivement recommand de confier l installation le remplacement et la maintenance de ces quipements des personnels qualifi s et exp riment s Warning This unit is intended for installation...

Page 100: ...a una de estas reas mediante la utilizaci n de una herramienta especial cerradura con llave u otro medio de seguridad Attention Cet appareil doit tre install e dans des zones d acc s r serv s L acc s...

Page 101: ...emblable ou quivalent recommand e par le fabricant Jeter les piles usag es conform ment aux instructions du fabricant Advertencia Existe peligro de explosi n si la bater a se reemplaza de manera incor...

Page 102: ...aanbevolen wordt Gebruikte batterijen dienen overeenkomstig fabrieksvoorschriften afgevoerd te worden Redundant Power Supplies Warning This unit might have more than one power supply connection All co...

Page 103: ...omloos te maken Advertencia Puede que esta unidad tenga m s de una conexi n para fuentes de alimentaci n Para cortar por completo el suministro de energ a deben desconectarse todas las conexiones Atte...

Page 104: ...dvertencia Cuando el sistema est en funcionamiento el voltaje del plano trasero es peligroso Tenga cuidado cuando lo revise Attention Lorsque le syst me est en fonctionnement des tensions lectriques c...

Page 105: ...cumplir con las normas de electricidad locales y nacionales Backplane Waarschuwing Een gevaarlijke spanning of energie is aanwezig op de backplane wanneer het systeem in gebruik is Voorzichtigheid is...

Page 106: ...ale elektriciteitsvoorschriften Warnung Die Entsorgung dieses Produkts sollte gem allen Bestimmungen und Gesetzen des Landes erfolgen Warning Ultimate disposal of this product should be handled accord...

Page 107: ...recyclage de ce produit sont g n ralement soumis des lois et ou directives de respect de l environnement Renseignez vous aupr s de l organisme comp tent Hot Swap Fan Warning Warning Hazardous moving...

Page 108: ...estornilladores y todos los objetos lejos de las aberturas del ventilador Attention Pieces mobiles dangereuses Se tenir a l ecart des lames du ventilateur Il est possible que les ventilateurs soient t...

Page 109: ...UL oder CAS zertifizierten Kabeln mit UL CSA gekennzeichnet an Ger ten oder Produkten die nicht mit Supermicro gekennzeichnet sind AC AC UL CSA UL CSE Supermicro Supermicro UL CSA UL CSA Supermicro U...

Page 110: ...le code pour tous les autres appareils lectriques sauf les produits d sign s par Supermicro seulement AC AC UL CSA UL CSA Supermicro UL CSA UL CSA Supermicro Advertencia Cuando instale el producto ut...

Page 111: ...Aansluitmethode deze moet altijd voldoen aan de lokale voorschriften en veiligheidsnormen inclusief de juiste kabeldikte en stekker Het gebruik van niet geschikte Kabels en of Adapters kan een storin...

Page 112: ...two SAS drives PCI Expansion Slots per node Two PCIe 3 0 x16 low profile slots One M 2 storage slot Input Output per node Network Must bundle with at least one SIOM network card support Ethernet IB O...

Page 113: ...95 non condensing Regulatory Compliance Electromagnetic Emissions FCC Class A EN 55032 Class A EN 61000 3 2 3 3 CISPR 32 Class A Electromagnetic Immunity EN 55024 CISPR 24 EN 61000 4 2 EN 61000 4 3 E...

Page 114: ...e The recovery block contains critical BIOS codes including memory detection and recovery codes for the user to flash a healthy BIOS image if the original main BIOS image is corrupted When the system...

Page 115: ...ifferent machine copy the Super ROM binary image file into the Root directory of a USB device or a writable CD DVD Note 1 If you cannot locate the Super ROM file in your drive disk visit our website a...

Page 116: ...if you want to start the BIOS recovery If you decide to proceed with BIOS recovery follow the procedures below 4 When the screen as shown above displays use the arrow keys to select the item Proceed w...

Page 117: ...to enter the BIOS Setup utility From the top of the tool bar select Boot to enter the submenu From the submenu list select Boot Option 1 as shown below Then set Boot Option 1 to UEFI AP UEFI Built in...

Page 118: ...terrupt this process until the BIOS flashing is complete 9 The screen above indicates that the BIOS update process is complete When you see the screen above unplug the AC power cable from the power su...

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