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ASUS F2A55-M LK2 Series

2.7.9 

Secure Boot

This option allows you to configure the Secure Boot related parameters.

OS Type [Other OS]

Configuration option: [Windows UEFI mode] [Other OS]

Secure Boot Mode [Standard]

This item appears only when you set the OS Type to [

Windows UEFI

]. Configuration option: 

[Standard] [Custom]

The following items appear when 

Secure Boot Mode

 is set to [

Custom

].

Key Management
 

Manage the Secure Boot Keys (PK, KEK, DB, DBX)

Install default Secure Boot Keys

Configuration options: [Yes] [No]

Platform Key (PK)

Load PK from File

Configuration options: [Acpi (a0341d0, 0)\PCI (1212)\USB (2, 0)\]

Copy PK to File

Configuration options: [OK]

Delete the PK

Configuration options: [Yes] [No]

KEK Management (KEK)

Load KEK from File

Configuration options: [OK]

Copy KEK to File

Configuration options: [OK] 

Delete the KEK

Configuration options: [Yes] [No]

Append KEK from File

Configuration options: [OK]

Summary of Contents for F2A55-M LK2 PLUS

Page 1: ...Motherboard F2A55 M LK2 Series F2A55 M LK2 F2A55 M LK2 PLUS ...

Page 2: ...spective companies and are used only for identification or explanation and to the owners benefit without intent to infringe Offer to Provide Source Code of Certain Software This product contains copyrighted software that is licensed under the General Public License GPL under the Lesser General Public License Version LGPL and or other Free Open Source Software Licenses Such software in this product...

Page 3: ... 7 1 4 Accelerated Processing Unit APU 1 7 1 4 1 APU installation 1 8 1 4 2 APU heatsink and fan assembly installation 1 9 1 5 System memory 1 11 1 5 1 Overview 1 11 1 5 2 Memory configurations 1 12 1 5 3 Installing a DIMM 1 16 1 6 Expansion slots 1 17 1 6 1 Installing an expansion card 1 17 1 6 2 Configuring an expansion card 1 17 1 6 3 PCI slot 1 17 1 6 4 PCI Express x1 slot 1 17 1 6 5 PCI Expre...

Page 4: ...requency Auto 2 13 2 4 5 EPU Power Saving Mode Disabled 2 13 2 4 6 DRAM Timing Control 2 14 2 4 7 CPU Voltage Offset Mode 2 14 2 4 8 DRAM Voltage Auto 2 14 2 4 9 SB 1 1V Voltage Auto 2 14 2 4 11 DIGI VRM 2 15 2 5 Advanced menu 2 17 2 5 1 CPU Configuration 2 17 2 5 2 SATA Configuration 2 18 2 5 3 USB Configuration 2 19 2 5 4 NB Configuration 2 19 2 5 5 Onboard Devices Configuration 2 20 2 5 6 APM 2...

Page 5: ... Enabled 2 27 2 7 6 Option ROM Messages Force BIOS 2 27 2 7 7 Setup Mode EZ Mode 2 27 2 7 8 CSM Parameters 2 27 2 7 9 Secure Boot 2 28 2 7 10 Boot Option Priorities 2 29 2 7 11 Boot Override 2 29 2 8 Tools menu 2 30 2 8 1 ASUS EZ Flash 2 Utility 2 30 2 8 2 ASUS SPD Information 2 30 2 8 3 ASUS O C Profile 2 30 2 9 Exit menu 2 31 Appendices Notices A 1 ASUS contact information A 3 ...

Page 6: ...your area If you are not sure about the voltage of the electrical outlet you are using contact your local power company If the power supply is broken do not try to fix it by yourself Contact a qualified service technician or your retailer Operation safety Before installing the motherboard and adding devices on it carefully read all the manuals that came with the package Before using the product en...

Page 7: ...system settings through the BIOS Setup menus Detailed descriptions of the BIOS parameters are also provided Where to find more information Refer to the following sources for additional information and for product and software updates 1 ASUS websites The ASUS website provides updated information on ASUS hardware and software products Refer to the ASUS contact information 2 Optional documentation Yo...

Page 8: ...lete a task IMPORTANT Instructions that you MUST follow to complete a task NOTE Tips and additional information to help you complete a task Typography Bold text Indicates a menu or an item to select Italics Used to emphasize a word or a phrase Key Keys enclosed in the less than and greater than sign means that you must press the enclosed key Example Enter means that you must press the Enter or Ret...

Page 9: ... 3GB We recommend a maximum of 3GB system memory if you are using a Windows 32 bit operating system Graphics Integrated AMD Radeon HD 7000 Series Graphics in the A Series APU Supports DVI D and D Sub ports Supports DVI with max resolution 2560x1600 60Hz Supports D Sub with max resolution 1920x1600 60Hz AMD Dual Graphics technology support Supports Microsoft DirectX 11 Refer to http www amd com us ...

Page 10: ...ack Internal I O connectors buttons switches 2 x USB 2 0 1 1 connectors support additional 4 USB 2 0 1 1 ports 4 x SATA 3 0Gb s connectors 1 x COM connector 1 x System panel connector 1 x Internal Speaker connector 1 x CPU fan connector 4 pin 1 x S PDIF output connector 1 x Chassis fan connector 3 pin 1 x Front panel audio connector 1 x 24 pin EATX power connector 1 x 4 pin ATX 12V power connector...

Page 11: ...1_USB12 USB34 SOCKET FM2 EATXPWR ATX12V SATA3G_3 SATA3G_4 SATA3G_2 SATA3G_1 SPEAKER VGA DVI USB78 USB56 F_PANEL COM1 KBPWR ASUS F2A55 M LK2 Series motherboard 2 x Serial ATA 3 0 Gb s cables UserGuide 1 x I O Shield User Guide Support DVD F2A55 M LK2 Series motherboards include F2A55 M LK2 PLUS and F2A55 M LK2 models The package contents vary from models If any of the above items is damaged or miss...

Page 12: ...xii ...

Page 13: ...Hz to boost the system s performance and to meet the higher bandwidth requirements of 3D graphics multimedia and Internet applications 8 channel high definition audio The onboard 8 channel HD audio High Definition Audio previously codenamed Azalia CODEC enables high quality 192KHz 24 bit audio output and jack detect feature that automatically detects and identifies what types of peripherals are pl...

Page 14: ...rograms It allows you to automatically connect to a PPPoE network for a more convenient online experience The ASUS Network iControl feature does not support Windows XP Vista operating systems ASUS UEFI BIOS EZ Mode ASUS UEFI BIOS a UEFI compliant architecture offers the first mouse controlled intuitive graphical BIOS interface that goes beyond the traditional keyboard only BIOS controls providing ...

Page 15: ...ersonalize your system ASUS CrashFree BIOS 3 ASUS CrashFree BIOS 3 allows you to restore a corrupted BIOS file from a USB storage device that contains the BIOS file C P R CPU Parameter Recall The BIOS C P R feature automatically restores the CPU default settings when the system hangs due to overclocking failure C P R eliminates the need to open the system chassis and clear the RTC data Simply shut...

Page 16: ...ded antistatic pad or in the bag that came with the component Before you install or remove any component switch off the ATX power supply and detach its power cord Failure to do so may cause severe damage to the motherboard peripherals or components Standby Power LED The motherboard comes with a standby power LED that lights up to indicate that the system is ON in sleep mode or in soft off mode Thi...

Page 17: ...ientation The edge with external ports goes to the rear part of the chassis as indicated in the image below DO NOT overtighten the screws Doing so can damage the motherboard Place this side towards the rear of the chassis 1 3 2 Screw holes Place six screws into the holes indicated by circles to secure the motherboard to the chassis ASUS F2A55 M LK2 Series 1 5 ...

Page 18: ... 240 pin module DDR3 DIMM_B1 64bit 240 pin module LAN1_USB12 USB34 SOCKET FM2 EATXPWR ATX12V SATA3G_3 SATA3G_4 SATA3G_2 SATA3G_1 SPEAKER VGA DVI 22 6cm 8 9in USB78 USB56 F_PANEL COM1 5 3 2 1 4 6 7 1 16 11 1 12 7 9 8 10 13 14 15 F2A55 M LK2 Series motherboards include F2A55 M LK2 PLUS and F2A55 M LK2 models The package contents vary from models The layout illustrations in this user guide are for F2...

Page 19: ...ATXPWR 4 pin ATX12V 1 24 3 AMD FM2 socket 1 7 4 CPU fan connector 4 pin CPU_FAN 1 23 5 DDR3 DIMM slots 1 11 6 SATA 3 0Gb s connectors 7 pin SATA3G_1 4 1 25 7 Clear RTC RAM 3 pin CLRTC 1 20 8 System panel connector 10 1 pin F_PANEL 1 26 9 Speaker connector 4 pin SPEAKER 1 26 10 USB 2 0 connectors 10 1 pin USB56 USB78 1 28 11 Serial port connector 10 1 pin COM 1 28 12 Digital audio connector 4 1 pin...

Page 20: ...1 4 1 APU installation 1 4 3 2 Chapter 1 Product introduction 1 8 ...

Page 21: ...sink and fan assembly installation Apply the Thermal Interface Material to the APU heatsink and APU before you install the heatsink and fan if necessary To install the APU heatsink and fan assembly ASUS F2A55 M LK2 Series 1 9 ...

Page 22: ...To uninstall the APU heatsink and fan assembly 5 3 1 4 2 Chapter 1 Product introduction 1 10 ...

Page 23: ...a DDR2 DIMM but is notched differently to prevent installation on a DDR2 DIMM socket DDR3 modules are developed for better performance with less power consumption The figure illustrates the location of the DDR3 DIMM sockets Channel Sockets Channel A DIMM_A1 Channel B DIMM_B1 F2A55 M LK2 PLUS F2A55 M LK2 PLUS 240 pin DDR3 DIMM sockets DIMM_A1 DIMM_B1 ASUS F2A55 M LK2 Series 1 11 ...

Page 24: ...update the memory QVL once the DIMMs are available in the market The default memory operation frequency is dependent on its Serial Presence Detect SPD which is the standard way of accessing information from a memory module Under the default state some memory modules for overclocking may operate at a lower frequency than the vendor marked value To operate at the vendor marked or at a higher frequen...

Page 25: ...3 x 2GB DS 9 9 9 24 1 5V 1 6V G SKILL F3 12800CL7D 8GBRH XMP 8GB 2 x 4GB DS 7 8 7 24 1 6V G SKILL F3 12800CL8D 8GBECO XMP 8GB 2 x 4GB DS 8 8 8 24 XMP 1 35V G SKILL F3 12800CL9D 8GBRL XMP 8GB 2 x 4GB DS 9 9 9 24 1 5V GEIL GET316GB1600C9QC XMP 16GB 4 x 4GB DS 9 9 9 28 1 6V GEIL GV34GB1600C8DC XMP 2GB DS 8 8 8 28 1 6V HYNIX HMT351U6CFR8C PB 4GB DS HYNIX H5TQ2G83 CFR PBC KINGMAX FLGE85F B8KJ9A FEIS XM...

Page 26: ...5F C8KL9 NAES 2GB SS KINGMAX KFC8FNLXF DXX 15A KINGMAX FLFE85F C8KM9 NAES 2GB SS KINGMAX KFC8FNMXF BXX 15A KINGMAX FLFE85F B8KL9 NEES 2GB DS KINGMAX KKB8FNWBFGNX 26A KINGMAX FLFF65F C8KL9 NEES 4GB DS KINGMAX KFC8FNLXF DXX 15A KINGMAX FLFF65F C8KM9 NEES 4GB DS KINGMAX KFC8FNMXF BXX 15A KINGSTON KVR1333D3N9 2G low profile 2GB SS Hynix H5TQ2G83AFRH9C 9 KINGSTON KVR1333D3S8N9 2G 2GB SS Micron IID77 D9...

Page 27: ...he ASUS website at www asus com for the latest QVL DDR3 1066 MHz capability Vendors Part No Size SS DS Chip Brand Chip NO Timing Voltage DIMM socket support Optional 1 DIMM 2 DIMMs Crucial CT12864BA1067 8FF 1GB SS Micron 9GF22D9KPT 7 ELPIDA EBJ21UE8EDF0 AE F 2GB DS ELPIDA J1108EDSE DJ F 1 35V low voltage KINGSTON KVR1066D3N7 1G low profile 1GB SS ELPIDA J1108BFSE DJ F 7 1 5V KINGSTON KVR1066D3N7 4...

Page 28: ...1 5 3 Installing a DIMM 1 2 3 To remove a DIMM B A Chapter 1 Product introduction 1 16 ...

Page 29: ...moved earlier 6 Replace the system cover When using PCI cards on shared slots ensure that the drivers support Share IRQ or that the cards do not need IRQ assignments Otherwise conflicts will arise between the two PCI groups making the system unstable and the card inoperable 1 6 3 PCI slot The PCI slot supports cards such as a LAN card SCSI card USB card and other cards that comply with PCI specifi...

Page 30: ...rd A B C D E F G H PCIEx16_1 shared PCIEx1_1 shared PCI1 slot shared Realtek LAN controller shared HD audio shared SATA controller shared On Chip USB EHCI 1 2 3 shared On Chip USB EHCI 1 2 3 4 shared Chapter 1 Product introduction 1 18 ...

Page 31: ...default to pins 2 3 Keep the cap on pins 2 3 for about 5 10 seconds then move the cap back to pins 1 2 3 Plug the power cord and turn ON the computer 4 Hold down the Del key during the boot process and enter BIOS setup to reenter data If the steps above do not help remove the onboard battery and move the jumper again to clear the CMOS RTC RAM data After clearing the CMOS reinstall the battery You ...

Page 32: ...tal current consumed must NOT exceed the power supply capability 5VSB whether under normal condition or in sleep mode F2A55 M LK2 PLUS 2 1 2 3 5V Default 5VSB USBPW5 8 2 1 2 3 5V 5VSB Default USBPW1 4 F2A55 M LK2 PLUS USB Device Wake Up 2 Keyboard power 3 pin KBPWR This jumper allows you to enable or disable the keyboard wake up feature When you set this jumper to pins 2 3 5VSB you can wake up the...

Page 33: ...speaker In the 4 6 and 8 channel configurations the function of this port becomes Front Speaker Out 5 Microphone port pink This port connects to a microphone Refer to the audio configuration table below for the function of the audio ports in 2 4 6 or 8 channel configuration 3 4 2 5 7 6 9 8 1 10 Audio 2 4 6 or 8 channel configuration Port Headset 2 channel 4 channel 6 channel 8 channel Light Blue R...

Page 34: ...l connectors 1 CPU and chassis fan connectors 4 pin CPU_FAN and 3 pin CHA_FAN Connect the fan cables to the fan connectors on the motherboard ensuring that the black wire of each cable matches the ground pin of the connector The CPU_FAN connector supports a CPU fan of maximum 2A 24 W fan power Only the CPU_FAN connector support the ASUS Fan Xpert feature DO NOT forget to connect the fan cables to ...

Page 35: ... power is inadequate DO NOT forget to connect the 4 pin ATX 12V power plug Otherwise the system will not boot up We recommend that you use a PSU with higher power output when configuring a system with more power consuming devices or when you intend to install additional devices The system may become unstable or may not boot up if the power is inadequate If you are uncertain about the minimum power...

Page 36: ...iguration for details You must install Windows XP Service Pack 3 or later version before using Serial ATA hard disk drives The Serial ATA RAID feature is available only if you are using Windows XP SP3 or later version When using hot plug and NCQ set the type of the SATA connectors in the BIOS to AHCI See section 2 5 2 SATA Configuration for details GND RSATA_RXP1 RSATA_RXN1 GND RSATA_TXN1 RSATA_TX...

Page 37: ...es when data is read from or written to the HDD ATX power button soft off button 2 pin PWRBTN This 2 pin connector is for the system power button Reset button 2 pin RESET This 2 pin connector is for the chassis mounted reset button for system reboot without turning off the system power 5 Speaker connector 4 pin SPEAKER The 4 pin connector is for the chassis mounted system warning speaker The speak...

Page 38: ...ails The front panel audio I O module is purchased separately 7 Front panel audio connector 10 1 pin AAFP This connector is for a chassis mounted front panel audio I O module that supports either High Definition Audio or AC 97 audio standard Connect one end of the front panel audio I O module cable to this connector SPDIF_OUT 5V SPDIFOUT GND F2A55 M LK2 PLUS F2A55 M LK2 PLUS Digital audio connecto...

Page 39: ... USB 2 0 module is purchased separately F2A55 M LK2 PLUS PIN 1 USB 5V USB_P8 USB_P8 GND NC USB 5V USB_P7 USB_P7 GND USB78 PIN 1 USB 5V USB_P6 USB_P6 GND NC USB 5V USB_P5 USB_P5 GND USB56 F2A55 M LK2 PLUS USB2 0 connectors 9 Serial port connector 10 1 pin COM This connector is for a serial COM port Connect the serial port module cable to this connector then install the module to a slot opening at t...

Page 40: ...h the motherboard package contains the drivers software applications and utilities that you can install to avail all motherboard features The contents of the Support DVD are subject to change at any time without notice Visit the ASUS website at www asus com for updates To run the Support DVD Place the Support DVD into the optical drive If Autorun is enabled in your computer the DVD automatically d...

Page 41: ...rt DVD that comes with the motherboard package Installing ASUS Update To install ASUS Update 1 Place the support DVD in the optical drive The Specials menu appears 2 Click the Utilities tab then click AI Suite II 3 Follow the onscreen instructions to complete the installation Quit all Windows applications before you update the BIOS using this utility Updating the BIOS To update the BIOS 1 From the...

Page 42: ...S based utility Before you start using this utility download the latest BIOS file from the ASUS website at www asus com To update the BIOS using EZ Flash 2 1 Insert the USB flash disk that contains the latest BIOS file to the USB port 2 Enter the Advanced Mode of the BIOS setup program Go to the Tool menu to select ASUS EZ Flash 2 Utility and press Enter to enable it 3 Press Tab to switch to the D...

Page 43: ...upport DVD may not be the latest version Download the latest BIOS file from the ASUS website at www asus com Recovering the BIOS To recover the BIOS 1 Turn on the system 2 Insert the support DVD to the optical drive or the USB flash drive that contains the BIOS file to the USB port 3 The utility automatically checks the devices for the BIOS file When found the utility reads the BIOS file and enter...

Page 44: ...rocess The succeeding utility screens are for reference only The actual utility screen displays may not be same as shown Before updating BIOS 1 Prepare the motherboard support DVD and a USB flash drive formatted using FAT32 16 on a single partition 2 Download the latest BIOS file and BIOS Updater from the ASUS website at http support asus com and save them on the USB flash drive NTFS is not suppor...

Page 45: ...me End keys to select the BIOS file and press Enter BIOS Updater checks the selected BIOS file and prompts you to confirm BIOS update Are you sure to update BIOS Yes No 4 Select Yes and press Enter When BIOS update is done press ESC to exit BIOS Updater Restart your computer DO NOT shut down or reset the system while updating the BIOS to prevent system boot failure For BIOS Updater version 1 30 or...

Page 46: ...er BIOS Setup using the first two options The BIOS setup screens shown in this section are for reference purposes only and may not exactly match what you see on your screen Ensure that a USB mouse is connected to your motherboard if you want to use the mouse to control the BIOS setup program The default BIOS settings for this motherboard apply for most conditions to ensure optimum performance If t...

Page 47: ...r details The boot device options vary depending on the devices you installed to the system The Boot Menu F8 button is available only when the boot device is installed to the system Exits the BIOS setup program without saving the changes saves the changes and resets the system or enters the Advanced Mode Selects the display language of the BIOS setup program Displays the CPU motherboard temperatur...

Page 48: ... the screen has the following main items Main For changing the basic system configuration Ai Tweaker For changing the overclocking settings Advanced For changing the advanced system settings Monitor For displaying the system temperature power status and changing the fan settings Boot For changing the system boot configuration Tool For configuring options for special functions Exit For selecting th...

Page 49: ...configuration options for that item Scroll bar A scroll bar appears on the right side of a menu screen when there are items that do not fit on the screen Press the Up Down arrow keys or Page Up Page Down keys to display the other items on the screen Navigation keys At the bottom right corner of the menu screen are the navigation keys for the BIOS setup program Use the navigation keys to select ite...

Page 50: ... options English Français Español Deutsch Русский 2 3 2 System Date Day xx xx xxxx Allows you to set the system date 2 3 3 System Time xx xx xx Allows you to set the system time 2 3 4 Security The Security menu items allow you to change the system security settings If you have forgotten your BIOS password erase the CMOS Real Time Clock RTC RAM to clear the BIOS password See section 1 7 Jumpers for...

Page 51: ...Enter when prompted to create confirm the password After you clear the password the Administrator Password item on top of the screen shows Not Installed User Password If you have set a user password you must enter the user password for accessing the system The User Password item on top of the screen shows the default Not Installed After you set a password this item shows Installed To set a user pa...

Page 52: ...cking related items Be cautious when changing the settings of the Ai Tweaker menu items Incorrect field values can cause the system to malfunction The configuration options for this section vary depending on the CPU and DIMM model you installed on the motherboard Scroll down to display the following items ...

Page 53: ...ration options Auto DDR3 800MHz DDR3 1066MHz DDR3 1333MHz DDR3 1600MHz DDR3 1866MHz DDR3 2133MHz DDR3 2400MHz Selecting a very high memory frequency may cause the system to become unstable If this happens revert to the default setting 2 4 3 APU Multiplier Auto Allows you to set the multiplier between the CPU Core Clock and the FSB Frequency Use the and keys to adjust the ratio The valid value rang...

Page 54: ...documentation before setting the CPU voltage Setting a high voltage may damage the CPU permanently and setting a low voltage may make the system unstable VDDNB Offset Mode Sign To offset the voltage by a positive value To offset the voltage by a negative value VDDNB Offset Voltage Auto Allows you to set the VDDNB Offset voltage The values range from 0 00625V to 0 500V with a 0 00625V interval 2 4 ...

Page 55: ...ns 100 110 120 130 CPU NB Current Capability 100 This item provides wider total power range for overclocking A higher value brings a wider total power range and extends the overclocking frequency range simultaneously Configuration options 100 110 120 130 CPU Power Phase Control Standard Phase number is the number of working VRM phase Increasing phase number under heavy system loading to get more t...

Page 56: ... Power Duty Control T Probe T Probe Maintains the VRM thermal balance Extreme Maintains the VRM current balance Do not remove the thermal module while changing the DIGI VRM related parameters The thermal conditions should be monitored ...

Page 57: ...Enabled Disabled NX Mode Enabled Enables or disables the No execute page protection function Configuration options Enabled Disabled SVM Enabled Enables or disables CPU virtualization Configuration options Disabled Enabled CPB Mode Auto Disables the CPB Core Performance Boost mode or set it to Auto for automatic configuration Configuration options Disabled Auto C6 Mode Disabled Enables or disables ...

Page 58: ...HCI when you want the SATA hard disk drives to use the AHCI Advanced Host Controller Interface The AHCI allows the onboard storage driver to enable advanced Serial ATA features that increases storage performance on random workloads by allowing the drive to internally optimize the order of commands Board SATA RAID ROM Legacy ROM This item only appears when OnChip SATA Type is set to RAID Disabled D...

Page 59: ...the legacy USB support is disabled EHCI Hand off Disabled Enabled Enables the support for operating systems without an EHCI hand off feature Disabled Disables the function USB Single Port Control Allows you to enable disable individual USB ports 2 5 4 NB Configuration IGFX Multi Monitor Disabled Enables or disables the Internal Graphics Device Multi Monitor support for add on VGA devices And the m...

Page 60: ... SPDIF Out Type SPDIF SPDIF Sets to SPDIF for SPDIF audio output HDMI Sets to HDMI for HDMI audio output Realtek LAN Controller Enabled Enabled Enables the Realtek LAN controller Disabled Disables the controller Realtek PXE OPROM Disabled This item appears only when you set the Realtek LAN Controller item to Enabled and allows you to enable or disable the Rom Help of the Realtek LAN controller Con...

Page 61: ...bles the Power On by a PS 2 mouse This feature requires an ATX power supply that provides at least 1A on the 5VSB lead Power On By PME Disabled Disabled Disables the PME to wake up by PCI PCIE devices Enabled Allows you to turn on the system through a PCI PCIE LAN or modem card This feature requires an ATX power supply that provides at least 1A on the 5VSB lead Power On By Ring Disabled Disabled D...

Page 62: ... Enabled This item appears only when you set the Network Stack item to Enabled When this item is disabled the IPV4 PXE boot option will not be created Configuration options Disable Link Enabled Ipv6 PXE Support Enabled This item appears only when you set the Network Stack item to Enabled When this item is disabled the IPV6 PXE boot option will not be created Configuration options Disable Link Enab...

Page 63: ...or Ignore N A The onboard hardware monitor automatically detects and displays the CPU chassis fan speeds in rotations per minute RPM If the fan is not connected to the motherboard the field shows N A Select Ignore if you do not wish to display the detected speed 2 6 3 CPU Q Fan Control Enabled Disabled Disables the CPU Q Fan control feature Enabled Enables the CPU Q Fan control feature Fan Speed L...

Page 64: ... to 90ºC CPU_FAN Fan Max Duty Cycle 100 Use the and keys to adjust the maximum CPU fan duty cycle The values range from 40 to 100 When the CPU temperature reaches the upper limit the CPU fan will operate at the maximum duty cycle CPU_FAN Lower Temperature 20ºC Displays the lower limit of the CPU temperature CPU_FAN Fan Min Duty Cycle 40 Use the and keys to adjust the minimum CPU fan duty cycle The...

Page 65: ...Chapter 2 BIOS information 2 25 2 7 Boot menu The Boot menu items allow you to change the system boot options Scroll down to display the following items ...

Page 66: ...full system control PS 2 devices will be available during POST at any circumstances This process will extend the POST time Disabled All PS 2 devices will not be available until OS bootup for a fastest POST time Network Stack Driver Support Disabled Disabled The BIOS skips over the Network Stack Driver and tries to boot from the next device Enabled Allows the BIOS to boot from the Network Stack Dri...

Page 67: ...turer had set the add on device to do so 2 7 7 Setup Mode EZ Mode Advanced Mode Sets Advanced Mode as the default screen for entering the BIOS setup program EZ Mode Sets EZ Mode as the default screen for entering the BIOS setup program 2 7 8 CSM Parameters This option controls whether or not CSM Compatibility Support Module will be launched Launch CSM Auto Configuration option Auto Enabled Disable...

Page 68: ...appear when Secure Boot Mode is set to Custom Key Management Manage the Secure Boot Keys PK KEK DB DBX Install default Secure Boot Keys Configuration options Yes No Platform Key PK Load PK from File Configuration options Acpi a0341d0 0 PCI 1212 USB 2 0 Copy PK to File Configuration options OK Delete the PK Configuration options Yes No KEK Management KEK Load KEK from File Configuration options OK ...

Page 69: ... options OK 2 7 10 Boot Option Priorities These items specify the boot device priority sequence from the available devices The number of device items that appears on the screen depends on the number of devices installed in the system To select the boot device during system startup press F8 when ASUS Logo appears To access Windows OS in Safe Mode press F8 after POST 2 7 11 Boot Override These items...

Page 70: ...rofile Save to Profile Allows you to save the current BIOS settings to the BIOS Flash and create a profile Key in a profile number from one to eight press Enter and then select Yes Load from Profile Allows you to load the previous BIOS settings saved in the BIOS Flash Key in the profile number that saved your CMOS settings press Enter and then select Yes DO NOT shut down or reset the system while ...

Page 71: ...are finished making your selections choose this option from the Exit menu to ensure the values you selected are saved When you select this option or if you press F10 a confirmation window appears Select Yes to save changes and exit Discard Changes Exit This option allows you to exit the Setup program without saving your changes When you select this option or if you press Esc a confirmation window ...

Page 72: ...2 32 ASUS F2A55 M LK2 Series ...

Page 73: ...rcuit different from that to which the receiver is connected Consult the dealer or an experienced radio TV technician for help The use of shielded cables for connection of the monitor to the graphics card is required to assure compliance with FCC regulations Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user s authority to opera...

Page 74: ...waste This product has been designed to enable proper reuse of parts and recycling This symbol of the crossed out wheeled bin indicates that the product electrical and electronic equipment should not be placed in municipal waste Check local regulations for disposal of electronic products DO NOT throw the mercury containing button cell battery in municipal waste This symbol of the crossed out wheel...

Page 75: ...Technical Support Telephone 1 812 282 2787 Support fax 1 812 284 0883 Online support support asus com ASUS COMPUTER GmbH Germany and Austria Address Harkort Str 21 23 D 40880 Ratingen Germany Fax 49 2102 959911 Web site www asus de Online contact www asus de sales Technical Support Telephone 49 1805 010923 Support Fax 49 2102 9599 11 Online support support asus com EUR 0 14 minute from a German fi...

Page 76: ...V2 1 1 2009 05 EN 301 489 24 V1 5 1 2010 09 EN 302 326 2 V1 2 2 2007 06 EN 302 326 3 V1 3 1 2007 09 EN 301 357 2 V1 4 1 2008 11 EN 50385 2002 EN 62311 2008 2006 95 EC LVD Directive EN 60950 1 A11 2009 EN 60950 1 A12 2011 EN 60065 2002 A2 2010 EN 60065 2002 A12 2011 2009 125 EC ErP Directive Regulation EC No 1275 2008 Regulation EC No 642 2009 Regulation EC No 278 2009 2011 65 EU RoHS Directive Ver...

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