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Asus Motherboard snaps into the retention tab, push the load lever (B) until it, 6. Close the load plate (A), then

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6. Close the load plate (A), then	A
push the load lever (B) until it
snaps into the retention tab.
	B

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!

The motherboard supports Intel® LGA775 processors with the Intel® Enhanced Memory 64 Technology (EM64T), Enhanced Intel SpeedStep® Technology (EIST), and Hyper‑Threading Technology.

If you install a dual-core CPU, make sure to connect the chassis fan cable to CHA_FAN connector for system stability.

1-10	Chapter 1: Product introduction

Contents

Page E2983 Revised Edition December Copyright © 2006 ASUSTeK COMPUTER INC. All Rights Reserved Chapter 1:Product introduction Chapter 2:BIOS setup Chapter 3:Software support Appendix:CPU features FederalCommunications Commission Statement Canadian Department of Communications Statement Electricalsafety Operation safety How this guide is organized Where to find more information Conventions used in this guide P5L-MXspecifications summary CPU Chipset Front Side Bus Memory Page Page Page 1.3.1 Product highlights LGA775 Intel® Core™2 Processor Ready 64-bit CPU support Intel® 945G chipset DDR2 memory support PCIExpress™ interface SerialATA technology 1.3.2 Innovative ASUS features CrashFree BIOS ASUS EZ Flash BIOS ASUS MyLogo C.P.R. (CPU Parameter Recall) Onboard LED 1.5.1 Placement direction 1.5.2 Screw holes 1.5.3 Motherboard layout 1.6.1 Installling the CPU 3.Lift the load lever in the direction of the arrow to a 135º angle 4.Lift the load plate with your thumb and forefinger to a 100º angle (A), then push the PnP cap from the load plate window to 6. Close the load plate (A), then push the load lever (B) until it snaps into the retention tab 1.6.2 Installling the CPU heatsink and fan P5L-MXCPU Fan Connector 1.6.3 Uninstalling the CPU heatsink and fan 4.Remove the heatsink and fan assembly from the motherboard 5.Rotate each fastener clockwise to reset the orientation 1.7.1 Overview 1.7.2 Memory configurations Page 1.7.3 DDR2 Qualified Vendors List DDR2 667 Qualified VendorsList DDR2 533 Qualified VendorsList 1.7.4 Installing a DIMM 1.7.5 Removing a DIMM 1.8.1 Installing an expansion card 1.8.2 Configuring an expansion card 1.8.3Interrupt assignments Standard interrupt assignments IRQ assignments for this motherboard 1.8.4 PCIslots 1.8.6 PCIExpress 1.8.5 PCIExpress 1.9Jumpers 1. Clear RTC RAM (CLRTC) To erase the RTC RAM: 1.Turn OFF the computer and unplug the power cord 2.Remove the onboard battery 2. USB device wake-up (3-pin USBPW1234, USBPW5678) P5L-MXUSB Device Wake Up USBPW1234 USBPW5678 The USB device 1.10.1 Rear panelconnectors LAN port LED indications Audio 2, 4, or 6-channelconfiguration 1.10.2 Internalconnectors 2. IDEconnectors (40-1pin PRI_IDE) P5L-MXIDE Connector SerialATA hard disk drive connection P5L-MXFan Connectors 5. DigitalAudio connector (4-1pin SPDIF_OUT) P5L-MXCPU Digital Audio Connector 6.ATX power connectors (24-pin EATXPWRand 4-pinATX12V) 7. Opticaldrive audio connector (4-pin CD) P5L-MXInternal Audio Connector 8. USB connectors (10-1pin USB56, USB78) These connectors are for USB 2.0 ports. Connect the optional P5L-MXUSB 2.0 Connectors 9. Front panelaudio connector (10-1pin AAFP) P5L-MXFront Panel Audio Connector 10. System panelconnector (10-1pin F_PANEL) This connector supports several chassis-mountedfunctions PA NEL P5L-MXSystem Panel Connector •System power LED (2-pinPLED) Page Page 2.1.1 Creating a bootable floppy disk 2.1.2 ASUS EZ Flash utility 2.1.3 AFUDOS utility Copying the current BIOS Updating the BIOS file 2.1.4 ASUS CrashFree BIOS 2 utility Recovering the BIOS from a floppy disk Recovering the BIOS from the support CD 2.1.5 ASUS Update utility Installing ASUS Update Updating the BIOS through the Internet Updating the BIOS through a BIOS file 2.2BIOS setup program 2.2.1 BIOS menu screen 2.2.2 Menu bar 2.2.3 Navigation keys 2.2.4 Menu items 2.2.5 Sub-menu items 2.2.6 Configuration fields 2.2.7 Pop-upwindow 2.2.8 Scrollbar 2.3.1 System Time [xx:xx:xx] 2.3.2 System Date [Day xx/xx/xxxx] 2.3.3 Legacy Diskette A [1.44M, 3.5 in.] 2.3.4 Primary, Third and Fourth IDEMaster/Slave Type [Auto] LBA/Large Mode [Auto] Block (Multi -sector Transfer) [Auto] PIO Mode [Auto] 2.3.5 IDEConfiguration Onboard IDEOperate Mode [Enhanced Mode] IDEDetect Time Out [35] 2.3.6 System Information AMIBIOS Processor System Memory 2.4.1 JumperFree Configuration AIOverclocking [Auto] CPU Frequency [200] DRAM Frequency [Auto] PCIExpress Frequency [Auto] CPU Clock Spread Spectrum [Enabled] PCIEClock Spread Spectrum [Disabled] FSB Termination Voltage [Auto] MCHChipset Voltage [Auto] Overclock Options [Overclock 5%] 2.4.2 USB Configuration USB Function [Enabled] Legacy USB Support [Auto] USB 2.0 Controller [Enabled] USB 2.0 Controller Mode [HiSpeed] 2.4.3 CPU Configuration Ratio CMOS Setting [6] VID CMOS Setting [62] Microcode Updation [Enabled] Max CPUID Value Limit [Disabled] 2.4.4 Chipset Configure DRAM Timing by SPD [Enabled] Hyper Path 3 [Auto] DRAM Throttling Threshold [Auto] Booting Graphic Adapter Priority [PCIExpress/I nt-VGA] InternalGraphics Mode Select [Enabled, 8MB] Graphics memory type [Auto] PEG Buffer Length [Auto] Link Latency [Auto] PEG Root Control[Auto] Slot Power [Auto] High Priority Port Select [Disabled] 2.4.5 Onboard Devices Configuration HD Audio Controller [Enabled] OnBoard PCIEX GbELAN [Enabled] SerialPort1 Address [3F8/IRQ4] ParallelPort Address [378] Page 2.4.6 PCIPnP Plug and Play O/S [No] PCILatency Timer [64] Allocate IRQ to PCIVGA [Yes] Palette Snooping [Disabled] 2.5.1 Suspend Mode [Auto] 2.5.2 ACPI2.0 Support [No] 2.5.3 ACPIAPIC Support [Enabled] 2.5.4 APM Configuration Power Button Mode [On/Off] Restore on AC Power Loss [Power Off] Power On By RTC Alarm [Disabled] Power On By ExternalModems [Disabled] Power On By PCIDevices [Disabled] Power On By PCIEDevices [Disabled] Power On By PS/2 Keyboard [Disabled] Power On By PS/2 Mouse [Disabled] 2.5.5 Hardware Monitor AIQuiet [Disabled] CPU Temperature [xxxC/xxxF] MB Temperature [xxxC/xxxF] CPU Fan Speed [xxxxRPM]or [N/A] Chassis Fan Speed [xxxxRPM]or [N/A] Power Fan Speed [xxxxRPM]or [N/A] VCOREVoltage, 3.3V Voltage, 5V Voltage, 12V Voltage 2.6.1 Boot Device Priority 1st ~xxth Boot Device [1st Floppy Drive] 2.6.2 Boot Settings Configuration Quick Boot [Enabled] FullScreen Logo [Enabled] Add On ROM Display Mode [Force BIOS] Bootup Num-Lock [On] 2.6.3 Security Change Supervisor Password User Access Level(FullAccess] Change User Password Clear User Password Password Check [Setup] Exit & Save Changes Exit & Discard Changes Discard Changes Load Setup Defaults Page Software3 support 3.2.1 Running the support CD 3.2.2 Drivers menu Intel(R) Chipset Inf Update Program Intel(R) Graphics Accelerator Driver SoundMAX ADI1986A Audio Driver Attansic L1 Gigabit Ethernet Driver 3.2.3 Utilities menu ASUS PC Probe ASUS Update ASUS Screen Saver ADOBEAcrobat Reader 3.2.4 Make Disk menu Make Intel® ICH7 32bit RAID Driver Disk Make Intel® ICH7 64bit RAID Driver Disk Make ITE8211 32/64bit IDEDriver Disk 3.2.5 Manuals menu 3.2.6 ASUS Contact information features that the motherboard supports Using the Intel® EM64T feature A.2.1 System requirements A.2.2 Using the EIST Using the H yper-Threading Technology