User Guide
Page 3
Contents Notices...vi Safety information vii About this guide vii M4A78LT-M LX specifications summary ix Chapter 1: Product introduction 1.1 Welcome 1-1 1.2 Package contents 1-1 1.3 Special features 1-1 1.3.1 Product highlights 1-1 1.3.2 Innovative ASUS features 1-3 1.4 Before you proceed 1-5 1.5 Motherboard overview 1-6 1.5.1 Placement direction 1-6 1.5.2 Screw holes 1-6 1.5.3 Motherboard layout 1-7 1.5.4 Layout contents 1-7 1.6 Central Processing Unit (CPU 1-8 1.6.1 Installing the CPU 1-8 1.6.2 Installing the heatsink and ...
Contents Notices...vi Safety information vii About this guide vii M4A78LT-M LX specifications summary ix Chapter 1: Product introduction 1.1 Welcome 1-1 1.2 Package contents 1-1 1.3 Special features 1-1 1.3.1 Product highlights 1-1 1.3.2 Innovative ASUS features 1-3 1.4 Before you proceed 1-5 1.5 Motherboard overview 1-6 1.5.1 Placement direction 1-6 1.5.2 Screw holes 1-6 1.5.3 Motherboard layout 1-7 1.5.4 Layout contents 1-7 1.6 Central Processing Unit (CPU 1-8 1.6.1 Installing the CPU 1-8 1.6.2 Installing the heatsink and ...
User Guide
Page 9
M4A78LT-M LX specifications summary CPU Chipset Front side bus Memory Graphics Expansion slots Storage / RAID LAN...Supports CPU up to install 4GB or more memory on the next page) ix Supports up to 95W * Refer to www.asus.com for the AMD® CPU support list AMD® 760G (780L)/ SB710 Up to 5200 MT/s HyperTransport™...240-pin DIMM slots support maximum 8GB unbuffered ECC and non-ECC DDR3 1866(O.C.) / 1600 (O.C.) / 1333 / 1066MHz memory modules * Refer to www.asus.com for the discrete GPUs that support Hybrid CrossFireX™. 1 x PCIe 2.0 x16 slot 2 x PCIe x1 slots 1 x PCI slot 6 x...
M4A78LT-M LX specifications summary CPU Chipset Front side bus Memory Graphics Expansion slots Storage / RAID LAN...Supports CPU up to install 4GB or more memory on the next page) ix Supports up to 95W * Refer to www.asus.com for the AMD® CPU support list AMD® 760G (780L)/ SB710 Up to 5200 MT/s HyperTransport™...240-pin DIMM slots support maximum 8GB unbuffered ECC and non-ECC DDR3 1866(O.C.) / 1600 (O.C.) / 1333 / 1066MHz memory modules * Refer to www.asus.com for the discrete GPUs that support Hybrid CrossFireX™. 1 x PCIe 2.0 x16 slot 2 x PCIe x1 slots 1 x PCI slot 6 x...
User Guide
Page 10
... Overclocking Protection: - FSB frequency tuning from 200MHz up to change without notice. ASUS C.P.R (CPU Parameter Recall) 2 x Serial ATA 3Gb/s cables 1 x I /O connectors BIOS ASUS unique features ASUS exclusive overclocking features Accessories Support DVD Form factor 1 x PS/2 Keyboard port 1 x...2.5 ASUS Core unlocker ASUS Q-Fan ASUS CrashFree BIOS3 ASUS EZ Flash2 ASUS AI Charger ASUS MyLogo2 ASUS EPU-4 Engine ASUS Anti Surge Intelligent overclocking tools: - M4A78LT-M LX specifications summary Back panel I/O ports Internal I /O shield 1 x User Manual Drivers ASUS Update ASUS Utilities...
... Overclocking Protection: - FSB frequency tuning from 200MHz up to change without notice. ASUS C.P.R (CPU Parameter Recall) 2 x Serial ATA 3Gb/s cables 1 x I /O connectors BIOS ASUS unique features ASUS exclusive overclocking features Accessories Support DVD Form factor 1 x PS/2 Keyboard port 1 x...2.5 ASUS Core unlocker ASUS Q-Fan ASUS CrashFree BIOS3 ASUS EZ Flash2 ASUS AI Charger ASUS MyLogo2 ASUS EPU-4 Engine ASUS Anti Surge Intelligent overclocking tools: - M4A78LT-M LX specifications summary Back panel I/O ports Internal I /O shield 1 x User Manual Drivers ASUS Update ASUS Utilities...
User Guide
Page 11
... and delivers better overclocking capabilities with the list below. 1.2 Package contents Check your package with less power consumption. ASUS M4A78LT-M LX 1-1 Thank you start installing the motherboard, and hardware devices on it another standout in the new 45nm manufacturing process.... Before you for the following items. Motherboard Cables Accessories Application DVD Documentation ASUS M4A78LT-M LX motherboard 2 x Serial ATA cables 1 x I/O shield ASUS motherboard Support DVD User Manual If any of new features and latest technologies, making it , ...
... and delivers better overclocking capabilities with the list below. 1.2 Package contents Check your package with less power consumption. ASUS M4A78LT-M LX 1-1 Thank you start installing the motherboard, and hardware devices on it another standout in the new 45nm manufacturing process.... Before you for the following items. Motherboard Cables Accessories Application DVD Documentation ASUS M4A78LT-M LX motherboard 2 x Serial ATA cables 1 x I/O shield ASUS motherboard Support DVD User Manual If any of new features and latest technologies, making it , ...
User Guide
Page 13
... setup, Turbo Key boosts performances without performing complicated BIOS changes. ASUS EPU ASUS EPU is an auto-recovery tool that contains the BIOS file. ASUS M4A78LT-M LX 1-3 ASUS MyLogo2™ Turn your system. ASUS Turbo Key ASUS Turbo Key allows you to ensure a quiet, cool, and efficient operation. ASUS Anti-Surge Protection This special design prevents expensive devices and...
... setup, Turbo Key boosts performances without performing complicated BIOS changes. ASUS EPU ASUS EPU is an auto-recovery tool that contains the BIOS file. ASUS M4A78LT-M LX 1-3 ASUS MyLogo2™ Turn your system. ASUS Turbo Key ASUS Turbo Key allows you to ensure a quiet, cool, and efficient operation. ASUS Anti-Surge Protection This special design prevents expensive devices and...
User Guide
Page 15
... down the system and unplug the power cable before removing or plugging in soft-off the ATX power supply and detach its power cord. SB_PWR M4A78LT-M LX ON OFF Standby Power Powered Off M4A78LT-M LX Onboard LED ASUS M4A78LT-M LX 1-5
... down the system and unplug the power cable before removing or plugging in soft-off the ATX power supply and detach its power cord. SB_PWR M4A78LT-M LX ON OFF Standby Power Powered Off M4A78LT-M LX Onboard LED ASUS M4A78LT-M LX 1-5
User Guide
Page 16
1.5 Motherboard overview 1.5.1 Placement direction When installing the motherboard, ensure that you place it into the chassis in the image below. 1.5.2 Screw holes Place six screws into the holes indicated by circles to secure the motherboard to the rear part of the chassis. Place this side towards the rear of the chassis as indicated in the correct orientation. M4A78LT-M LX 1-6 Chapter 1: Product introduction DO NOT overtighten the screws! The edge with external ports goes to the chassis. Doing so can damage the motherboard.
1.5 Motherboard overview 1.5.1 Placement direction When installing the motherboard, ensure that you place it into the chassis in the image below. 1.5.2 Screw holes Place six screws into the holes indicated by circles to secure the motherboard to the rear part of the chassis. Place this side towards the rear of the chassis as indicated in the correct orientation. M4A78LT-M LX 1-6 Chapter 1: Product introduction DO NOT overtighten the screws! The edge with external ports goes to the chassis. Doing so can damage the motherboard.
User Guide
Page 17
...3 24.4cm(9.6in) LAN1_USB12 CPU_FAN SATA3G_5 SATA3G_6 ICS 9LPRS483 AUDIO CHA_FAN RTL 8111E PCIEX1_1 AMD® RS780L Super I/O PCIEX16 M4A78LT-M LX PCIEX1_2 CLRTC Lithium Cell CMOS Power AMD® SB710 8Mb BIOS 7 SATA3G_2 SATA3G_4 ALC 887 SPDIF_OUT AAFP SB_PWR PCI1 USB910... connectors (10-1 pin USB56, USB78, 1-25 ATX12V) USB910) 4. Onboard LED 1-5 6. pin SPEAKER) 1-26 3. Clear RTC RAM (CLRTC) 1-18 ASUS M4A78LT-M LX 1-7 CPU and chassis fan connectors (4-pin CPU_FAN and 3-pin CHA_FAN) 1-27 11. Serial ATA connectors (7-pin SATA1-6) 1-23 14. AMD CPU socket ...
...3 24.4cm(9.6in) LAN1_USB12 CPU_FAN SATA3G_5 SATA3G_6 ICS 9LPRS483 AUDIO CHA_FAN RTL 8111E PCIEX1_1 AMD® RS780L Super I/O PCIEX16 M4A78LT-M LX PCIEX1_2 CLRTC Lithium Cell CMOS Power AMD® SB710 8Mb BIOS 7 SATA3G_2 SATA3G_4 ALC 887 SPDIF_OUT AAFP SB_PWR PCI1 USB910... connectors (10-1 pin USB56, USB78, 1-25 ATX12V) USB910) 4. Onboard LED 1-5 6. pin SPEAKER) 1-26 3. Clear RTC RAM (CLRTC) 1-18 ASUS M4A78LT-M LX 1-7 CPU and chassis fan connectors (4-pin CPU_FAN and 3-pin CHA_FAN) 1-27 11. Serial ATA connectors (7-pin SATA1-6) 1-23 14. AMD CPU socket ...
User Guide
Page 18
...; processor. Use a CPU that the CPU corner with the gold triangle matches the socket corner with a small triangle. 4. Locate the CPU socket on the motherboard. M4A78LT-M LX M4A78LT-M LX CPU AM3 2. The AM3 socket has a different pinout from the 940-pin socket designed for the AM3 socket. 1.6.1 Installing the CPU To install a CPU: 1. Carefully...
...; processor. Use a CPU that the CPU corner with the gold triangle matches the socket corner with a small triangle. 4. Locate the CPU socket on the motherboard. M4A78LT-M LX M4A78LT-M LX CPU AM3 2. The AM3 socket has a different pinout from the 940-pin socket designed for the AM3 socket. 1.6.1 Installing the CPU To install a CPU: 1. Carefully...
User Guide
Page 19
... CPU FAN PWR CPU FAN IN CPU FAN PWM M4A78LT-M LX CPU fan connector DO NOT forget to indicate that comes with the heatsink package. You can occur if you fail to plug this connector. Hardware ... a CPU heatsink and fan following the instructions that it is in place, push down the socket lever to section 1.6.2 Installing heatsink and fan for instructions. 7. ASUS M4A78LT-M LX 1-9 Connect the CPU fan cable to the CPU_FAN connector on the side tab to connect the CPU fan connector! When the CPU is locked. 6. 5. The...
... CPU FAN PWR CPU FAN IN CPU FAN PWM M4A78LT-M LX CPU fan connector DO NOT forget to indicate that comes with the heatsink package. You can occur if you fail to plug this connector. Hardware ... a CPU heatsink and fan following the instructions that it is in place, push down the socket lever to section 1.6.2 Installing heatsink and fan for instructions. 7. ASUS M4A78LT-M LX 1-9 Connect the CPU fan cable to the CPU_FAN connector on the side tab to connect the CPU fan connector! When the CPU is locked. 6. 5. The...
User Guide
Page 21
..., otherwise you fail to the module base. 5. Align the other end of the DDR3 DIMM sockets: DIMM_A1 DIMM_B1 Channel Channel A Channel B M4A78LT-M LX M4A78LT-M LX 240-pin DDR3 DIMM sockets Sockets DIMM_A1 DIMM_B1 ASUS M4A78LT-M LX 1-11 Ensure that the retention bracket is in place, connect the CPU fan cable to the connector on the retention mechanism...
..., otherwise you fail to the module base. 5. Align the other end of the DDR3 DIMM sockets: DIMM_A1 DIMM_B1 Channel Channel A Channel B M4A78LT-M LX M4A78LT-M LX 240-pin DDR3 DIMM sockets Sockets DIMM_A1 DIMM_B1 ASUS M4A78LT-M LX 1-11 Ensure that the retention bracket is in place, connect the CPU fan cable to the connector on the retention mechanism...
User Guide
Page 22
... single-channel operation. • Always install DIMMs with the same CAS latency. The system maps the total size of 256 megabits (Mb) chips or less. M4A78LT-M LX Motherboard Qualified Vendors Lists (QVL) DDR3-1866(O.C.) MHz capability Vendor Part No. Timing DIMM (BIOS) Voltage DIMM Support A* B* DS N/A Heat-Sink Package 7-7-7-20 1.75-1.85V...
... single-channel operation. • Always install DIMMs with the same CAS latency. The system maps the total size of 256 megabits (Mb) chips or less. M4A78LT-M LX Motherboard Qualified Vendors Lists (QVL) DDR3-1866(O.C.) MHz capability Vendor Part No. Timing DIMM (BIOS) Voltage DIMM Support A* B* DS N/A Heat-Sink Package 7-7-7-20 1.75-1.85V...
User Guide
Page 25
...; • • Due to CPU spec., AMD® 100 and 200 series CPUs support up to DDR3 1066MHz. Visit the ASUS website at www.asus.com for the latest QVL. With ASUS design, this motherboard can support up to DDR3 1333MHz. • When overclocking, some AMD CPU models may not support DDR3 1600... configuration. • B*: Supports one pair of modules inserted into either the blue slots or the black slots as one pair of dual-channel memory configuration. ASUS M4A78LT-M LX 1-15 DDR3-1066 MHz capability Vendor Part No.
...; • • Due to CPU spec., AMD® 100 and 200 series CPUs support up to DDR3 1066MHz. Visit the ASUS website at www.asus.com for the latest QVL. With ASUS design, this motherboard can support up to DDR3 1333MHz. • When overclocking, some AMD CPU models may not support DDR3 1600... configuration. • B*: Supports one pair of modules inserted into either the blue slots or the black slots as one pair of dual-channel memory configuration. ASUS M4A78LT-M LX 1-15 DDR3-1066 MHz capability Vendor Part No.
User Guide
Page 27
... specifications. Replace the system cover. 1.8.2 Configuring an expansion card After installing the expansion card, configure it and make the necessary hardware settings for later use . ASUS M4A78LT-M LX 1-17 See Chapter 2 for the expansion card. Remove the system unit cover (if your motherboard is completely seated on the system and change the necessary...
... specifications. Replace the system cover. 1.8.2 Configuring an expansion card After installing the expansion card, configure it and make the necessary hardware settings for later use . ASUS M4A78LT-M LX 1-17 See Chapter 2 for the expansion card. Remove the system unit cover (if your motherboard is completely seated on the system and change the necessary...
User Guide
Page 28
... the RTC RAM, never remove the cap on pins 2-3 for about 5~10 seconds, then move the jumper again to pins 1-2. 3. CLRTC 12 23 M4A78LT-M LX Normal Clear RTC (Default) M4A78LT-M LX Clear RTC RAM To erase the RTC RAM: 1. Plug the power cord and turn ON the computer. 4. Shut down the key during the...
... the RTC RAM, never remove the cap on pins 2-3 for about 5~10 seconds, then move the jumper again to pins 1-2. 3. CLRTC 12 23 M4A78LT-M LX Normal Clear RTC (Default) M4A78LT-M LX Clear RTC RAM To erase the RTC RAM: 1. Plug the power cord and turn ON the computer. 4. Shut down the key during the...
User Guide
Page 29
... supply at least 1A on the keyboard. USBPW1-4 12 23 +5V +5VSB (Default) USBPW5-10 M4A78LT-M LX 12 23 +5V +5VSB (Default) M4A78LT-M LX USB Device Wake Up 3. Set these jumpers to +5V to CPU, DRAM in slow refresh, power supply in the BIOS. 2. KBPWR 12 23 +5V +5VSB (Default) M4A78LT-M LX M4A78LT-M LX Keyboard Power Setting ASUS M4A78LT-M LX 1-19
... supply at least 1A on the keyboard. USBPW1-4 12 23 +5V +5VSB (Default) USBPW5-10 M4A78LT-M LX 12 23 +5V +5VSB (Default) M4A78LT-M LX USB Device Wake Up 3. Set these jumpers to +5V to CPU, DRAM in slow refresh, power supply in the BIOS. 2. KBPWR 12 23 +5V +5VSB (Default) M4A78LT-M LX M4A78LT-M LX Keyboard Power Setting ASUS M4A78LT-M LX 1-19
User Guide
Page 31
... PIN 1 MIC2 MICPWR Line out_R NC Line out_L PORT1 L PORT1 R PORT2 R SENSE_SEND PORT2 L M4A78LT-M LX HD-audio-compliant Legacy AC'97 pin definition compliant definition M4A78LT-M LX Front panel audio connector • We recommend that supports either High Definition Audio or AC`97 audio ...other VGA-compatible devices. 10. Serial port. Front panel audio connector (10-1 pin AAFP) This connector is purchased separately. 7. ASUS M4A78LT-M LX 1-21 Connect one end of the motherboard high-definition audio capability. • If you want to connect a high definition front panel...
... PIN 1 MIC2 MICPWR Line out_R NC Line out_L PORT1 L PORT1 R PORT2 R SENSE_SEND PORT2 L M4A78LT-M LX HD-audio-compliant Legacy AC'97 pin definition compliant definition M4A78LT-M LX Front panel audio connector • We recommend that supports either High Definition Audio or AC`97 audio ...other VGA-compatible devices. 10. Serial port. Front panel audio connector (10-1 pin AAFP) This connector is purchased separately. 7. ASUS M4A78LT-M LX 1-21 Connect one end of the motherboard high-definition audio capability. • If you want to connect a high definition front panel...
User Guide
Page 32
...the Recommended Power Supply Wattage Calculator at least 15 A on +12 V and that the 20-pin power plug can provide at http://support.asus. ATX12V EATXPWR +12V DC +12V DC M4A78LT-M LX GND GND +3 Volts +12 Volts +12 Volts +5V Standby Power OK PIN 1 GND +5 Volts GND +5 Volts GND +3 Volts +3... Volts PIN 1 M4A78LT-M LX ATX power connectors GND +5 Volts +5 Volts +5 Volts -5 Volts GND GND GND PSON# GND -12 Volts +3 Volts • We recommend that you are ...
...the Recommended Power Supply Wattage Calculator at least 15 A on +12 V and that the 20-pin power plug can provide at http://support.asus. ATX12V EATXPWR +12V DC +12V DC M4A78LT-M LX GND GND +3 Volts +12 Volts +12 Volts +5V Standby Power OK PIN 1 GND +5 Volts GND +5 Volts GND +3 Volts +3... Volts PIN 1 M4A78LT-M LX ATX power connectors GND +5 Volts +5 Volts +5 Volts -5 Volts GND GND GND PSON# GND -12 Volts +3 Volts • We recommend that you are ...
User Guide
Page 33
... RSATA_RXN2 RSATA_RXP2 GND GND RSATA_TXN4 RSATA_TXP4 GND RSATA_RXN4 RSATA_RXP4 GND GND RSATA_RXP1 RSATA_RXN1 GND RSATA_TXP1 RSATA_TXN1 GND GND RSATA_RXP3 RSATA_RXN3 GND RSATA_TXP3 RSATA_TXN3 GND M4A78LT-M LX SATA3G_1 SATA3G_3 M4A78LT-M LX SATA connectors • Install the Windows® XP Service Pack 3 or later versions before using Serial ATA. • If you can create a RAID 0, RAID... drive. • For more details on RAID/AHCI, refer to the RA ID/AHCI Supplementary Guide included in the folder named Manual in the BIOS. ASUS M4A78LT-M LX 1-23
... RSATA_RXN2 RSATA_RXP2 GND GND RSATA_TXN4 RSATA_TXP4 GND RSATA_RXN4 RSATA_RXP4 GND GND RSATA_RXP1 RSATA_RXN1 GND RSATA_TXP1 RSATA_TXN1 GND GND RSATA_RXP3 RSATA_RXN3 GND RSATA_TXP3 RSATA_TXN3 GND M4A78LT-M LX SATA3G_1 SATA3G_3 M4A78LT-M LX SATA connectors • Install the Windows® XP Service Pack 3 or later versions before using Serial ATA. • If you can create a RAID 0, RAID... drive. • For more details on RAID/AHCI, refer to the RA ID/AHCI Supplementary Guide included in the folder named Manual in the BIOS. ASUS M4A78LT-M LX 1-23