Asus M4A78LT-M LE User Manual Page 1

MotherboardM4A78LT-M LEE5032_M4A78LT-M LE.indb 1 9/25/09 2:31:04 PM

xM4A78LT-M LE specications summaryBack panel I/O ports 1 x PS/2 Keyboard port 1 x PS/2 Mouse port 1 x LAN (RJ-45) port 1 x VGA port 1 x DVI-D port 4

1.2 Package contentsCheck your motherboard package for the following items.Motherboard ASUS M4A78LT-M LE motherboardCables 2 x Serial ATA cables

HyperTransport™ 3.0 supportHyperTransport™ 3.0 technology provides 2.6 times more bandwidth than HT1.0 that radically improves system efciency for

1.3.2 Innovative ASUS featuresASUS Express Gate - 0 to Inernet in SecondsASUS Express Gate is an ASUS exclusive OS that provides you with quick acces

ASUS Anti-Surge ProtectionThis special design prevents expensive devices and the motherboard from damage caused by power surges from switching power s

1.4 Before you proceedTake note of the following precautions before you install motherboard components or change any motherboard settings.• Unplug t

M4A78LT-M LE1.5 Motherboard overview1.5.1 Placement directionWhen installing the motherboard, ensure that you place it into the chassis in the corre

1.5.3 Motherboard layout1.5.4 Layout contentsM4A78LT-M LEPCIEX16PCIEX1_1PCI2PCI1PRI_IDEUSB56USB910 USB78SPDIF_OUTAAFPICS9LPRS485ATX12VEATXPWRCPU_FAN

1.6 Central Processing Unit (CPU)This motherboard supports AMD® Phenom™ II / Athlon™ II / Sempron™ 100 series processors.1.6.1 Installing the CPUTo

5. When the CPU is in place, push down the socket lever to secure the CPU. The lever clicks on the side tab to indicate that it is locked.6. Install

iiCopyright © 2009 ASUSTeK Computer Inc. All Rights Reserved.No part of this manual, including the products and software described in it, may be repro

1.6.2 Installing the heatsink and fanEnsure that you use only AMD-certied heatsink and fan assembly.To install the CPU heatsink and fan:1. Place th

3. Align the other end of the retention bracket to the retention module base. A clicking sound denotes that the retention bracket is in place.Ensure

1.7.2 Memory congurationsYou may install 512MB, 1GB, 2GB, and 4GB unbuffered ECC and non-ECC DDR3 DIMMs into the DIMM sockets.• You may install var

DDR3-1600 MHz capability(continued on the next page)Vendor Part No. SizeSS/DSBrand Chip NO.Timing DIMM (BIOS)VoltageDIMM SupportA* B*G.SKILL F3-12800C

DDR3-1333MHz capabilityVendor Part No. SizeSS/DSBrand Chip NO.Timing DIMM (BIOS)VoltageDIMM SupportA* B*G.SKILL F3-10600CL8D-2GBHK 1024MB SS G.SKILL H

SS: Single-sided / DS: Double-sided DIMM support: • A*: Supports one module inserted into either slot as single-channel memory conguration. •

1.7.3 Installing a DIMMUnplug the power supply before adding or removing DIMMs or other system components. Failure to do so can cause severe damage t

1.8 Expansion slotsIn the future, you may need to install expansion cards. The following sub-sections describe the slots and the expansion cards that

1.9 Jumpers1. Clear RTC RAM (CLRTC)This jumper allows you to clear the Real Time Clock (RTC) RAM in CMOS. You can clear the CMOS memory of date, ti

2. USB device wake-up (3-pin USBPW1-4, USBPW5-10)Set these jumpers to +5V to wake up the computer from S1 sleep mode (CPU stopped, DRAM refreshed, sy

iiiContentsContents ... iiiNotices ...

1.10 Connectors1.10.1 Rear panel ports1. PS/2 Mouse port (green). This port is for a PS/2 mouse.2. LAN (RJ-45) port. This port allows Gigabit conn

6. USB 2.0 ports 1 and 2. These two 4-pin Universal Serial Bus (USB) ports connect to USB 2.0 devices.7. USB 2.0 ports 3 and 4. These two 4-pin Univ

2. ATX power connectors (24-pin EATXPWR, 4-pin ATX12V)These connectors are for an ATX power supply. The plugs from the power supply are designed to 

3. IDE connector (40-1 pin PRI_IDE)The onboard IDE connector is for Ultra DMA 133/100 signal cable. There are three connectors on each Ultra DMA 133/

4. Serial ATA connectors (7-pin SATA1, SATA2, SATA3, SATA4, SATA5, and SATA6)These connectors are for the Serial ATA signal cables for Serial ATA 3Gb

5. System panel connector (10-1 pin F_PANEL)This connector supports several chassis-mounted functions.M4A78LT-M LEM4A78LT-M LE System panel connector

6. USB connectors (10-1 pin USB56, USB78, USB910)These connectors are for USB 2.0 ports. Connect the USB module cable to any of these connectors, the

8. Digital audio connector (4-1 pin SPDIF_OUT)This connector is for an additional Sony/Philips Digital Interface (S/PDIF) port.Ensure that the audio

10. CPU and chassis fan connectors (4-pin CPU_FAN and 3-pin CHA_FAN)The fan connectors support cooling fans of 350mA~740mA (8.88W max.) or a total of

1.11 Software support1.11.1 Installing an operating systemThis motherboard supports Windows® XP/Vista/7 Operating Systems (OS). Always install the l

ivContents1.10.2 Internal connectors ... 1-211.11 Software support ...

Chapter 1: Product introduction1-30E5032_M4A78LT-M LE.indb 30 9/25/09 2:32:07 PM

ASUS M4A78LT-M LE 2-1Chapter 2BIOS information2.1 Managing and updating your BIOSSave a copy of the original motherboard BIOS le to a USB ash disk

2-2 Chapter 2: BIOS informationUpdating from a BIOS file a. Select Update BIOS from a le, then click Next. b. Locate the BIOS le from the Open w

ASUS M4A78LT-M LE 2-32.1.3 ASUS CrashFree BIOS utilityThe ASUS CrashFree BIOS is an auto recovery tool that allows you to restore the BIOS le when

2-4 Chapter 2: BIOS information2.2 BIOS setup programUse the BIOS Setup program to update the BIOS or congure its parameters. The BIOS screens inclu

ASUS M4A78LT-M LE 2-52.2.1 BIOS menu screen2.2.2 Menu barThe menu bar on top of the screen has the following main items:Main For changing the

2-6 Chapter 2: BIOS information2.2.4 Menu itemsThe highlighted item on the menu bar displays the specic items for that menu. For example, selecting

ASUS M4A78LT-M LE 2-72.3 Main menuWhen you enter the BIOS Setup program, the Main menu screen appears, giving you an overview of the basic system in

2-8 Chapter 2: BIOS informationLBA/Large Mode [Auto]Enables or disables the LBA mode. Setting this item to [Auto] enables the LBA mode if the device s

ASUS M4A78LT-M LE 2-92.4.1 JumperFree Conguration2.4 Advanced menuThe Advanced menu items allow you to change the settings for the CPU and other s

vContents2.5 Power menu ... 2-162.5.1 Suspend Mode ...

2-10 Chapter 2: BIOS informationProcessor Frequency Multiplier [Auto]Sets the processor frequency multiplier. Conguration options: [Auto] [x4.0 800MH

ASUS M4A78LT-M LE 2-11VDDNB Over Voltage [Auto]Sets the VDDNB over voltage. The valid value ranges vary depending on your CPU model. Use <+> /

2-12 Chapter 2: BIOS information2.4.2 CPU CongurationThe items in this menu show the CPU-related information that the BIOS automatically detects.GAR

ASUS M4A78LT-M LE 2-13ECC CongurationECC Mode [Disabled]Allows you to set the ECC mode. Conguration options: [Disabled] [Basic] [Good] [Super] [Max

2-14 Chapter 2: BIOS information2.4.4 Onboard Device CongurationSerial Port1 Address [3F8/IRQ4]Allows you to select the Serial Port1 base address.

ASUS M4A78LT-M LE 2-152.4.6 USB CongurationThe items in this menu allows you to change the USB-related features. Select an item then press <Ente

2-16 Chapter 2: BIOS information2.5 Power menuThe Power menu items allow you to change the settings for the Advanced Conguration and Power Interface

ASUS M4A78LT-M LE 2-172.5.5 HW Monitor CongurationCPU Temperature [xxxºC/xxxºF] or [Ignored] MB Temperature [xxxºC/xxxºF] or [Ignored]The onboard h

2-18 Chapter 2: BIOS information2.6 Boot menuThe Boot menu items allow you to change the system boot options. Select an item then press <Enter>

ASUS M4A78LT-M LE 2-19AddOn ROM Display Mode [Force BIOS]Sets the display mode for option ROM. Conguration options: [Force BIOS] [Keep Current]Bootu

viNoticesFederal Communications Commission StatementThis device complies with Part 15 of the FCC Rules. Operation is subject to the following two cond

2-20 Chapter 2: BIOS informationChange User PasswordSelect this item to set or change the user password. The User Password item on top of the screen s

ASUS M4A78LT-M LE 2-212.7 Tools menuThe Tools menu items allow you to congure options for special functions. Select an item then press <Enter>

2-22 Chapter 2: BIOS informationExit & Discard ChangesSelect this option only if you do not want to save the changes that you made to the Setup pr

viiSafety informationElectrical safety• To prevent electric shock hazard, disconnect the power cable from the electric outlet before relocating the sy

viiiConventions used in this guideTo ensure that you perform certain tasks properly, take note of the following symbols used throughout this manual.

ixM4A78LT-M LE specications summary(continued on the next page)CPU AMD® Socket AM3 AMD® Phenom™ II / Athlon™ II / Sempron™ 100 series processors S