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1-16

Chapter 1: Product introduction

1.4.4 

Removing a DIMM

1. 

Simultaneously press the retaining 

clips outward to unlock the DIMM.

2. 

Remove the DIMM from the socket.

1.4.3 

Installing a DIMM

3. 

Hold the DIMM by both of its ends, 

then insert the DIMM vertically into 

the socket. Apply force to both ends 

of the DIMM simultaneously until the 

retaining clips snap back into place, 

and the DIMM cannot be pushed in 

any further to ensure proper sitting of 

the DIMM.

Ensure to unplug the power supply before adding or removing DIMMs or other system 

components. Failure to do so may cause severe damage to both the motherboard and the 

components.

1. 

Unlock a DIMM socket by pressing 

the retaining clips outward.

2. 

Align a DIMM on the socket such that 

the notch on the DIMM matches the 

DIMM slot key on the socket.

A DIMM is keyed with a notch so that it fits in only one direction. DO NOT force a DIMM into 

a socket in the wrong direction to avoid damaging the DIMM.

Support the DIMM lightly with your fingers when pressing the retaining clips. The DIMM 

might get damaged when it flips out with extra force.

Always insert the DIMM into the socket VERTICALLY to prevent DIMM notch damage.

1

2

Unlocked retaining clip

DIMM notch

DIMM slot key

1

3

Locked Retaining Clip

3

2

1

1

Summary of Contents for P7H55-M DVI

Page 1: ...Motherboard P7H55 USB3 ...

Page 2: ...anation and to the owners benefit without intent to infringe Offer to Provide Source Code of Certain Software This product may contain copyrighted software that is licensed under the General Public License GPL and under the Lesser General Public License Version LGPL The GPL and LGPL licensed code in this product is distributed without any warranty Copies of these licenses are included in this prod...

Page 3: ...stem memory 1 8 1 4 1 Overview 1 8 1 4 2 Memory configurations 1 9 1 4 3 Installing a DIMM 1 16 1 4 4 Removing a DIMM 1 16 1 5 Expansion slot 1 17 1 5 1 Installing an expansion card 1 17 1 5 2 Configuring an expansion card 1 17 1 5 3 PCI slots 1 17 1 5 4 PCI Express x1 slots 1 17 1 5 5 PCI Express 2 0 x16 slots 1 17 1 6 Jumpers 1 18 1 7 Onboard switches 1 19 1 8 Connectors 1 21 1 8 1 Rear panel co...

Page 4: ...Mode Tech 2 10 2 4 6 Xtreme Phase Full Power Mode 2 10 2 4 7 DRAM Frequency 2 10 2 4 8 QPI Frequency 2 10 2 4 9 ASUS 3rd Party UI Priority 2 10 2 4 10 OC Tuner 2 11 2 4 11 Start auto tuning 2 11 2 4 12 DRAM Timing Control 2 11 2 4 13 CPU Differential Amplitude 2 13 2 4 14 CPU Clock Skew 2 13 2 4 15 CPU Voltage Mode 2 13 2 4 16 IMC Voltage 2 13 2 4 17 DRAM Voltage 2 13 2 4 18 CPU PLL Voltage 2 14 2...

Page 5: ...2 Repost Video on S3 Resume 2 19 2 6 3 ACPI 2 0 Support 2 19 2 6 4 ACPI APIC Support 2 19 2 6 5 EuP Ready 2 19 2 6 6 APM Configuration 2 20 2 6 7 Hardware Monitor 2 21 2 7 Boot menu 2 22 2 7 1 Boot Device Priority 2 22 2 7 2 Boot Settings Configuration 2 22 2 7 3 Security 2 23 2 8 Tools menu 2 25 2 8 1 ASUS O C Profile 2 25 2 8 2 AI NET 2 2 25 2 8 3 ASUS EZ Flash 2 2 26 2 8 4 Express Gate 2 26 2 9...

Page 6: ...t from that to which the receiver is connected Consult the dealer or an experienced radio TV technician for help Canadian Department of Communications Statement This digital apparatus does not exceed the Class B limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications This class B digital apparatus complies w...

Page 7: ...be included in your motherboard and is defined as a CLASS 1 LASER PRODUCT INVISIBLE LASER RADIATION AVOID EXPOSURE TO BEAM RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT TYPE DISPOSE OF USED BATTERIES ACCORDING TO THE ABOVE BATTERY RELATED INSTRUCTIONS Operation safety Before installing the motherboard and adding devices on it carefully read all the manuals that came with the package Bef...

Page 8: ... include optional documentation such as warranty flyers that may have been added by your dealer These documents are not part of the standard package Conventions used in this guide To make sure that you perform certain tasks properly take note of the following symbols used throughout this manual DANGER WARNING Information to prevent injury to yourself when trying to complete a task CAUTION Informat...

Page 9: ...ual CPUs Some hyper DIMMs only support one DIMM per channel Please refer to Memory QVL for details Refer to www asus com or this user manual for the Memory QVL Qualified Vendors Lists Expansion Slots 1 x PCI Express 2 0 x16 slot blue 1 x PCI Express 2 0 x16 slot x4 speed 2 5GT s black 2 x PCI Express 2 0 x1 slots 2 5GT s 2 x PCI slots Multi GPU support Supports ATI Quad GPU CrossFireX Technology S...

Page 10: ...2 vCore Adjustable CPU voltage at 0 00625V increment vIMC Adjustable IMC voltage at 0 00625V increment vDRAM Bus 64 step DRAM voltage control vPCH 36 step chipset voltage control vCPU PLL 56 step reference voltage control SFS Stepless Frequency Selection Internal Base Clock tuning from 80 MHz up to 500 MHz at 1MHz increment PCI Express frequency tuning from 100MHz up to 200MHz at 1MHz increment Ov...

Page 11: ... pin ATX 12V Power connector 1 x System Panel 1 x MemOK button 1 x COM connector BIOS Features 16 Mb Flash ROM AMI BIOS PnP DMI2 0 WfM2 0 SM BIOS 2 5 ACPI 2 0a Manageability WfM 2 0 DMI 2 0 WOL by PME WOR by PME PXE Accessories 2 x Serial ATA 3 0Gb s cables 1 x I O shield 2 in 1 Q connector USB System panel Retail version only User s manual Support DVD Contents Drivers ASUS Utilities ASUS Update A...

Page 12: ...xii ...

Page 13: ... came with the component Before you install or remove any component ensure that the ATX power supply is switched off or the power cord is detached from the power supply Failure to do so may cause severe damage to the motherboard peripherals or components Onboard 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 14: ...e chassis Connectors Jumpers Slots LED Page Connectors Jumpers Slots LED Page 1 ATX power connectors 24 pin EATXPWR 4 pin EATX12V 1 22 8 System panel connector 20 8 pin PANEL 1 26 2 CPU chassis and power fan connectors 4 pin CPU_FAN 3 pin CHA_FAN 3 pin PWR_FAN 1 23 9 USB connectors 10 1 pin USB910 USB1112 1 27 3 LGA1156 CPU Socket 1 3 10 Clear RTC RAM 3 pin CLRTC 1 18 4 DDR3 DIMM slots 1 8 11 Digi...

Page 15: ...t contacts motherboard components ASUS will shoulder the cost of repair only if the damage is shipment transit related Keep the cap after installing the motherboard ASUS will process Return Merchandise Authorization RMA requests only if the motherboard comes with the cap on the LGA1156 socket The product warranty does not cover damage to the socket contacts resulting from incorrect CPU installatio...

Page 16: ...he tab only The CPU fits in only one correct orientation DO NOT force the CPU into the socket to prevent bending the connectors on the socket and damaging the CPU Gold triangle mark Alignment keys CPU notches 5 Position the CPU over the socket ensuring that the gold triangle is on the bottom left corner of the socket and then fit the socket alignment keys into the CPU notches PnP cap Cap tab ...

Page 17: ...n tab 6 Apply some Thermal Interface Material to the exposed area of the CPU that the heatsink will be in contact with ensuring that it is spread in an even thin layer Some heatsinks come with pre applied thermal paste If so skip this step The Thermal Interface Material is toxic and inedible DO NOT eat it If it gets into your eyes or touches your skin wash it off immediately and seek professional ...

Page 18: ...1156 socket is incompatible with the LGA775 and LGA1366 sockets in size and dimension Orient the heatsink and fan assembly such that the CPU fan cable is closest to the CPU fan connector To install the CPU heatsink and fan 1 Place the heatsink on top of the installed CPU making sure that the four fasteners match the holes on the motherboard 2 Push down two fasteners at a time in a diagonal sequenc...

Page 19: ...s connector 1 3 3 Uninstalling the CPU heatsink and fan To uninstall the CPU heatsink and fan 1 Disconnect the CPU fan cable from the connector on the motherboard 2 Rotate each fastener counterclockwise 3 Pull up two fasteners at a time in a diagonal sequence to disengage the heatsink and fan assembly from the motherboard A A B B 4 Carefully remove the heatsink and fan assembly from the motherboar...

Page 20: ...s 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 Recommended memory configurations One DIMM Install one memory module in slot A1 or B1 first as a single channel operation Two DIMMs dual channel operation Four DIMMs dual cha...

Page 21: ...ASUS exclusively provides two DDR3 1600 DIMM support for each memory channel According to Intel CPU spec DIMM voltage below 1 65V is recommended to protect the CPU According to Intel CPU spec CPUs with a core frequency of 2 66G support the maximum DIMM frequency of up to DDR3 1333 To use DIMMs of a higher frequency with a 2 66G CPU enable the DRAM O C Profile feature in BIOS Refer to section 2 4 A...

Page 22: ... Chip Brand Chip NO Timing Voltage DIMM socket support Optional A B C KINGSTON KHX1800C9D3T1K3 6GX XMP 6GB 3 x 2GB DS 1 65 P7H55 USB3 Motherboard Qualified Vendors Lists QVL DDR3 1600MHz capability for Intel Lynnfield CPU Vendor Part No Size SS DS Chip Brand Chip NO Timing Voltage DIMM socket support Optional A B C A DATA AD31600G001GMU 1GB SS 9 9 9 24 1 65 1 85 A DATA AX3U1600GB1G9 AG 2GB 2 x 1GB...

Page 23: ...8 24 1 65 CORSAIR CMX8GX3M4A1600C9 XMP 8GB 4 x 2GB DS 9 9 9 24 1 65 Crucial BL12864BA1608 8SFB XMP 1GB SS 1 8 Crucial BL25664BN1608 16FF XMP 2GB DS 8 8 8 24 1 65 G SKILL F3 12800CL9D 2GBNQ 2GB 2 x 1GB SS 1 6 G SKILL F3 12800CL9D 4GBRL 2GB 2 x 1GB SS 1 6 G SKILL F3 12800CL7D 4GBRH XMP 4GB 2 x 2GB DS 7 7 7 24 1 65 G SKILL F3 12800CL8T 6GBPI XMP 6GB 3 x 2GB DS 8 8 8 21 1 6 1 65 G SKILL F3 12800CL9T 6...

Page 24: ... 9 OCZ OCZ3P1333LV3GK 3GB 3 x 1GB SS 7 7 7 1 65 OCZ OCZX1333LV6GK XMP 6GB 3 x 2GB DS NA 8 8 8 1 6 PSC AL7F8G73D DG1 1GB SS PSC A3P1GF3DGF PSC AL8F8G73D DG1 2GB DS PSC A3P1GF3DGF SAMSUNG M378B2873EH1 CH9 1GB SS SAMSUNG K4B1G0846E SAMSUNG M378B5673EH1 CH9 2GB DS SAMSUNG K4B1G0846E Asint SLZ3128M8 EDJE 2GB DS ELPIDA J1108BASE DJ E ASUS N A 1GB DS ATP AQ28M72D8BJH9S 1GB SS SAMSUNG K4B1G0846D ECC ATP A...

Page 25: ...ABG DJ E 9 ELPIDA EBJ21UE8BDF0 DJ F 2GB DS ELPIDA J1108BDSE DJ F ELPIDA EBJ21UE8EDF0 DJ F 2GB DS ELPIDA J1108EDSE DJ F G SKILL F3 10600CL7D 2GBPI 2GB 2 x 1GB SS 1 65 G SKILL F3 10600CL8D 2GBHK 2GB 2 x 1GB SS 1 65 G SKILL F3 10666CL7T 6GBPK XMP 2GB DS 7 7 7 18 1 5 1 6 G SKILL F3 10666CL7D 4GBPI XMP 4GB 2 x 2GB DS 7 7 7 21 1 5 G SKILL F3 10666CL7D 4GBRH XMP 4GB 2 x 2GB DS 7 7 7 21 1 5 G SKILL F3 106...

Page 26: ...nt DDRIII1208 AE Elixir M2Y2G64CB8HA9N BE 2GB DS WINTEC 3DU3191A 10 1GB DS Qimonda IDSH51 03A1F1C 10F 7 Vendor Part No Size SS DS Chip Brand Chip NO Timing Dimm Bios Voltage DIMM socket support Optional A B C SAMSUNG M378B5673DZ1 CH9 2GB DS SAMSUNG K4B1G0846D 9 SAMSUNG M378B5673EH1 CH9 2GB DS SAMSUNG K4B1G0846E SAMSUNG M391B5673DZ1 CH9 2GB DS SAMSUNG K4B1G0846D ECC 9 SAMSUNG M378B5273BH1 CH9 4GB D...

Page 27: ...ICRON MT16JTF25664AZ 1G1F1 2GB DS MICRON 8ZF22 D9KPV 7 SAMSUNG M378B5273BH1 CF8 4GB DS SAMSUNG K4B2G0846B HCF8 8 1 5 Transcend TS256MLK64V1U 2GB DS ELPIDA J1108BABG AE E 7 Asint SLY3128M8 EAE 1GB SS Asint DDRIII1208 AE Asint SLZ3128M8 EAE 2GB DS Asint DDRIII1208 AE Elixir M2Y2G64CB8HA9N BE 2GB DS WINTEC 3DU3191A 10 1GB DS Qimonda IDSH51 03A1F1C 10F 7 P7H55 USB3 Motherboard Qualified Vendors Lists ...

Page 28: ...er system components Failure to do so may cause severe damage to both the motherboard and the components 1 Unlock a DIMM socket by pressing the retaining clips outward 2 Align a DIMM on the socket such that the notch on the DIMM matches the DIMM slot key on the socket A DIMM is keyed with a notch so that it fits in only one direction DO NOT force a DIMM into a socket in the wrong direction to avoi...

Page 29: ...nstalling the expansion card configure it by adjusting the software settings 1 Turn on the system and change the necessary BIOS settings if any See Chapter 2 for information on BIOS setup 2 Assign an IRQ to the card 3 Install the software drivers for the expansion card 1 5 3 PCI slots The PCI slots support cards such as a LAN card SCSI card USB card and other cards that comply with PCI specificati...

Page 30: ...F the computer and unplug the power cord 2 Move the jumper cap from pins 1 2 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 re enter data If the steps above do not help remove the onboard battery and move the jumper again to ...

Page 31: ...e ASUS website at www asus com If you turn off the computer and replace DIMMs during the tuning process the system continues memory tuning after turning on the computer To stop memory tuning turn off the computer and unplog the power cord for about 5 10 seconds If your system fail to boot due to BIOS overclocking press the MemOK switch to boot and load BIOS default settings A messgae will appear d...

Page 32: ...g items in the BIOS menu follow the current setting of the Turbo Key II switch If you change the switch setting to Enable under the OS environment the Turbo Key II function will be activated after the next system bootup You may use the TurboV Auto Tuning overclock in the BIOS setup program and enable the Turbo Key II function at the same time However the system will use the last setting you have m...

Page 33: ...onnects a headphone or a speaker In 4 channel 6 channel and 8 channel configuration the function of this port becomes Front Speaker Out 7 PS 2 Keyboard port purple This port is for a PS 2 keyboard 8 USB 3 0 ports 1 and 2 blue These 4 pin Universal Serial Bus USB ports are available for connecting USB 3 0 devices 9 Optical S PDIF Out port This port connects an external audio output device via an op...

Page 34: ...PSCalculator aspx SLanguage en us for details 1 8 2 Internal connectors 1 ATX power connectors 24 pin EATXPWR 4 pin EATX12V These connectors are for ATX power supply plugs The power supply plugs are designed to fit these connectors in only one orientation Find the proper orientation and push down firmly until the connectors completely fit Audio 2 4 6 8 channel configuration Port Headset 2 channel ...

Page 35: ... fan connectors on the motherboard making sure that the black wire of each cable matches the ground pin of the connector Only the CPU_FAN and CHA_FAN connectors support the FAN Xpert feature If you install two VGA cards we recommend that you plug the rear chassis fan cable to the motherboard connector labeled CHA_FAN for better thermal environment 3 Digital audio connector 4 1 pin SPDIF_OUT This c...

Page 36: ... of the motherboard s high definition audio capability If you want to connect a high definition front panel audio module to this connector set the Front Panel Type item in the BIOS setup to HD Audio If you want to connect an AC 97 front panel audio module to this connector set the item to AC97 By default this connector is set to HD Audio 5 Serial port connector 10 1 pin COM1 This connector is for ...

Page 37: ...s These connectors are set to Standard IDE mode by default In Standard IDE mode you can connect Serial ATA boot data hard disk drives to these connectors You must install Windows XP Service Pack 2 or later version before using Serial ATA hard disk drives When using hot plug and NCQ set the Configure SATA as item in the BIOS to AHCI See section Storage Configuration for details ...

Page 38: ...his connector The IDE LED lights up or flashes when data is read from or written to the HDD System warning speaker 4 pin SPEAKER This 4 pin connector is for the chassis mounted system warning speaker The speaker allows you to hear system beeps and warnings ATX power button soft off button 2 pin PWRSW This connector is for the system power button Pressing the power button turns the system on or put...

Page 39: ...chassis These USB connectors comply with USB 2 0 specification that supports up to 480 Mbps connection speed You can connect the front panel USB cable to the ASUS Q Connector USB blue first and then install the Q Connector USB to the USB connector onboard if your chassis supports front panel USB ports The USB module is purchased separately Never connect a 1394 cable to the USB connectors Doing so ...

Page 40: ...port DVD information The support DVD that comes with the motherboard package contains the drivers software applications and utilities that you can install to avail all motherboard features 1 10 1 Running the support DVD Place the support DVD into the optical drive The DVD automatically displays the Drivers menu if Autorun is enabled in your computer Click each menu tab and select the items you wan...

Page 41: ... the support DVD in the optical drive 2 From the Main menu click the Utilities tab and then click Install ASUS Update VX XX XX 3 The ASUS Update utility is copied to your system Quit all Windows applications before you update the BIOS using this utility Updating the BIOS To update the BIOS 1 From the Windows desktop click Start Programs ASUS ASUSUpdate ASUSUpdate to launch the ASUS Update utility ...

Page 42: ...the correct BIOS file is found ASUSTek EZ Flash 2 BIOS ROM Utility V4 12 Current ROM Update ROM A Note PATH A BOARD P7H55 USB3 VER 0108 DATE 04 21 2010 BOARD Unknown VER Unknown DATE Unknown Enter Select or Load Tab Switch V Drive Info Up Down Home End Move B Backup ESC Exit Updating from a BIOS file a Select Update BIOS from a file then click Next b Locate the BIOS file from the Open window then ...

Page 43: ...d support DVD may be older than the BIOS file published on the ASUS official website If you want to use the newer BIOS file download the file at support asus com and save it to a USB flash drive Recovering the BIOS To recover the BIOS 1 Turn on the system 2 Insert the motherboard support DVD to the optical drive or the USB flash drive containing the BIOS file to the USB port 3 The utility automati...

Page 44: ...y for most conditions to ensure optimum performance If the system becomes unstable after changing any BIOS settings load the default settings to ensure system compatibility and stability Select the Load Setups Default item under the Exit Menu See section 2 9 Exit menu The BIOS setup screens shown in this section are for reference purposes only and may not exactly match what you see on your screen ...

Page 45: ... LBA mode Logical Block Addressing mode if the device supports this mode and if the device was not previously formatted with LBA mode disabled Disabled Disables this function Block Multi Sector Transfer M Auto Enables or disables data multi sectors transfers Auto When set to Auto the data transfer from and to the device occurs in multiple sectors at a time if the device supports multi sector trans...

Page 46: ...es to use the Advanced Host Controller Interface AHCI set this item to AHCI 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 Hard Disk Write Protect Disabled Disables or enables device write protection This will be effective only if the device i...

Page 47: ...7H55 USB3 2 7 2 3 4 System Information This menu gives you an overview of the general system specifications The BIOS automatically detects the BIOS information CPU specification and system memory in this menu ...

Page 48: ...tel R SpeedStep TM Tech Enabled Intel R TurboMode Tech Enabled Xtreme Phase Full Power Mode Auto DRAM Frequency Auto QPI Frenquency Auto ASUS 3rd Party UI Priority ASUS Utility OC Tuner Turbo Profile Start auto tuning DRAM Timing Control v02 61 C Copyright 1985 2010 American Megatrends Inc CPU Differential Amplitude Auto CPU Clock Skew Auto Please key in numbers directly CPU Voltage Mode Offset Of...

Page 49: ...tings to DRAM frequency DRAM timing and DRAM voltage Configuration options DDR3 1800MHz DDR3 1866MHz DDR3 2000MHz DDR3 2133MHz DDR3 2200MHz DRAM Frequency MHz Lynnfield CPU Frequency GHz Clarkdale CPU Frequency GHz 2 66 2 8 2 93 2 8 Others 1333 Auto Auto Auto D O C P Auto 1600 D O C P Auto Auto D O C P D O C P Above 1600 D O C P D O C P D O C P N A N A When using DIMMs with a frequncy higher than ...

Page 50: ...s to adjust the PCIE frequency The values range from 100 to 200 2 4 7 DRAM Frequency Auto Allows you to set the DDR3 operating frequency Configuration options when set the AI Overclock Tuner item to Auto or X M P Auto DDR3 800MHz DDR3 1066MHz DDR3 1333MHz DDR3 1600 Configuration options when set the AI Overclock Tuner item to D O C P Auto DDR3 900MHz DDR3 1200MHz DDR3 1500MHz DDR3 1800 The DRAM Fr...

Page 51: ... on your settings of the following sub items CAS Latency Auto Configuration options Auto 3 DRAM Clock 4 DRAM Clock 10 DRAM Clock 11 DRAM Clock RAS to CAS Delay Auto Configuration options Auto 3 DRAM Clock 4 DRAM Clock 14 DRAM Clock 15 DRAM Clock RAS PRE Time Auto Configuration options Auto 3 DRAM Clock 4 DRAM Clock 14 DRAM Clock 15 DRAM Clock RAS ACT Time Auto Configuration options Auto 3 DRAM Clo...

Page 52: ... Configuration options Auto 1 DRAM Clock 8 DRAM Clock WRITE to READ Delay SR Auto Configuration options Auto 10 DRAM Clock 22 DRAM Clock READ to WRITE Delay DD Auto Configuration options Auto 2 DRAM Clock 14 DRAM Clock READ to WRITE Delay DR Auto Configuration options Auto 2 DRAM Clock 14 DRAM Clock READ to WRITE Delay SR Auto Configuration options Auto 2 DRAM Clock 14 DRAM Clock READ to READ Dela...

Page 53: ...set the CPU Voltage Mode item to Offset and allows you to set the Offset voltage The values range from 0 00625V to 0 50000V with a 0 00625V interval Offset Sign This item appears only when you set the Offset Voltage item to a value other than Auto To offset the voltage by a positive value To offset the voltage by a negative value Fixed Voltage Auto This item appears only when you set the CPU Volta...

Page 54: ...000V DRAM Voltage 1 2000V 1 5625V 1 5750V 1 6250V 1 6375V 1 6875V 1 7000V 2 0000V CPU PLL Voltage 1 8000V 1 8625V 1 8750V 1 9250V 1 9375 1 9875 2 0000V 2 5000V PCH Voltage 1 0500V 1 1875V 1 2000V 1 3000V 1 3125V 1 4500V 1 4625V 1 5000V 2 4 20 DRAM DATA REF Voltage on CHA B Auto Allows you to set the DRAM DATA Reference Voltage on Channel A B The values range from 0 395x to 0 630x with a 0 005x int...

Page 55: ... in this screen may be different due to the CPU you installed CPU Ratio Setting Auto Allows you to adjust the ratio between CPU Core Clock and BCLK Frequency Use the and keys to adjust the value The valid value ranges differently according to your CPU model C1E Support Enabled Enabled Enables the C1E support function This item should be enabled in order to enable the Enhanced Halt Sate Disabled Di...

Page 56: ...to zero 0 Intel R HT Technology Enabled Enabled Enables the Intel Hyper Threading Technology Disabled Only one thread per activated CPU core is enabled Active Processor Cores All All Activate all CPU cores in the processor package 1 Activate only 1 CPU core in the processor package 2 Activate 2 CPU cores in the processor package A20M Disabled Enabled Legacy OSes and APs may need this function enab...

Page 57: ...ont Panel Type HD Audio AC97 Set the front panel audio connector AAFP mode to legacy AC 97 HD Audio Set the front panel audio connector AAFP mode to high definition audio Realtek LAN1 Enabled Enabled Enables Realtek LAN Controller Disabled Disables Realtek LAN Controller LAN Boot ROM Disabled This item appears only when you enable the previous item s Disabled Disables Realtek LAN Boot ROM Enabled ...

Page 58: ... legacy USB support is disabled BIOS EHCI Hand off Enabled Disabled Disables the function Enabled Enables the support for operating systems without an EHCI hand off feature 2 5 5 PCIPnP The PCIPnP menu items allow you to change the advanced settings for PCI PnP devices Plug And Play O S No Yes When set to Yes and if you install a Plug and Play operating system the operating system configures the P...

Page 59: ... system automatically configures the ACPI suspend mode 2 6 2 Repost Video on S3 Resume No Determines whether to invoke VGA BIOS POST on S3 STR resume No The system will not invoke VGA BIOS POST on S3 STR resume Yes The system invokes VGA BIOS POST on S3 STR resume 2 6 3 ACPI 2 0 Support Disabled Disabled When set to Disabled the system will not add additional tables as per ACPI 2 0 specifications ...

Page 60: ... connection cannot be made on the first try Turning an external modem off and then back on while the computer is off causes an initialization string that turns the system power on Power On By PCI Devices Disabled Disabled Disables the PME to wake up from S5 by PCI devices Enabled Allows you to turn on the system through a PCI LAN or modem card This feature requires an ATX power supply that provide...

Page 61: ... to set the appropriate performance level of the CPU fan Standard Sets to Standard to make the CPU fan automatically adjust depending on the CPU temperature Silent Sets to Silent to minimize the fan speed for quiet CPU fan operation Turbo Sets to Turbo to achieve maximum CPU fan speed Manual Sets to Manual to assign detailed fan speed control parameters The following items appear only when you set...

Page 62: ...pends on the number of devices installed in the system Configuration options Removable Dev Hard Drive ATAPI CD ROM Disabled 2 7 2 Boot Settings Configuration Quick Boot Enabled Disabled When set to Disabled BIOS performs all the POST items Enabled When set to Enabled BIOS skips some power on self tests POST while booting to decrease the time needed to boot the system Chassis Fan Profile Standard T...

Page 63: ... 7 3 Security The Security menu items allow you to change the system security settings Select an item then press Enter to display the configuration options Change Supervisor Password Select this item to set or change the supervisor password The Supervisor Password item on top of the screen shows the default Not Installed After you set a password this item shows Installed To set a Supervisor Passwo...

Page 64: ...er password 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 Password 1 Select the Change User Password item and press Enter 2 On the password box that appears type a password composed of at least six letters and or numbers then press Enter 3 Confirm the password when prompted The message Password Installed...

Page 65: ...s Enter and then choose a profile number to save your CMOS settings in the Save To sub item You can save eight 8 CMOS profiles Load CMOS Profile Allows you to load the previous BIOS settings saved in the BIOS Flash Press Enter and choose a profile to load Start O C Profile Allows you to run the utility to save and load CMOS Press Enter to run the utility This function can support devices such as a...

Page 66: ...ther installed OS Choose Prompt User to stay at the first screen of Express Gate for user action Configuration options Prompt User 1 second 3 seconds 5 seconds 10 seconds 15 seconds 20 seconds 30 seconds Reset User Data No Allows you to clear Express Gate s user data Configuration options No Reset When setting this item to Reset make sure to save the setting to the BIOS so that the user data will ...

Page 67: ...t to save the changes that you made to the Setup program If you made changes to fields other than System Date System Time and Password the BIOS asks for a confirmation before exiting Discard Changes This option allows you to discard the selections you made and restore the previously saved values After selecting this option a confirmation appears Select Ok to discard any changes and load the previo...

Page 68: ...2 28 Chapter 2 BIOS information ...

Page 69: ...1 812 282 3777 Fax 1 510 608 4555 Web site usa asus com 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 Component 49 1805 010923 Telephone System Note Eee ...

Page 70: ...302 326 3 V1 3 1 2007 09 EN 301 357 2 V1 3 1 2006 05 2006 95 EC LVD Directive EN 60950 1 2001 A11 2004 EN 60950 1 2006 EN60065 2002 A1 2006 EN 60950 1 2006 A11 2009 2009 125 EC ErP Directive Regulation EC No 1275 2008 EN 62301 2005 Regulation EC No 642 2009 EN 62301 2005 Regulation EC No 278 2009 EN 62301 2005 CE marking Declaration Date May 14 2010 Year to begin affixing CE marking 2010 Position ...

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