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Contents Notices...vi Safety information vii About this guide viii M4A78LT PLUS specifications summary ix Chapter 1: Product introduction 1.1 Before you proceed 1-1 1.2 Motherboard overview 1-2 1.2.1 Placement direction 1-2 1.2.2 Screw holes 1-2 1.2.3 Motherboard layout 1-3 1.2.4 Layout contents 1-4 1.3 Central Processing Unit (CPU 1-4 1.3.1 Installing the ...
Contents Notices...vi Safety information vii About this guide viii M4A78LT PLUS specifications summary ix Chapter 1: Product introduction 1.1 Before you proceed 1-1 1.2 Motherboard overview 1-2 1.2.1 Placement direction 1-2 1.2.2 Screw holes 1-2 1.2.3 Motherboard layout 1-3 1.2.4 Layout contents 1-4 1.3 Central Processing Unit (CPU 1-4 1.3.1 Installing the ...
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...user guide contains the information you must press two or more information Refer to complete a task. ASUS websites The ASUS website provides updated information on ASUS hardware and software products. Detailed descriptions of the standard package. IMPORTANT: Instructions that you must ... may include optional documentation, such as warranty flyers, that you MUST follow to the ASUS contact information. 2. These documents are not part of the BIOS parameters are linked with a plus sign (+). Typography Bold text Italics ++ Indicates a menu or an item to select....
...user guide contains the information you must press two or more information Refer to complete a task. ASUS websites The ASUS website provides updated information on ASUS hardware and software products. Detailed descriptions of the standard package. IMPORTANT: Instructions that you must ... may include optional documentation, such as warranty flyers, that you MUST follow to the ASUS contact information. 2. These documents are not part of the BIOS parameters are linked with a plus sign (+). Typography Bold text Italics ++ Indicates a menu or an item to select....
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...memory of 4GB or more, Windows® 32-bit operating system may only recognize less than 3GB. M4A78LT PLUS specifications summary CPU Chipset System Bus Memory Expansion slots Storage / RAID LAN Audio USB ASUS unique features AMD® socket AM3 for AMD® Phenom™ II / Athlon™ II... (HD only) AMD® SB710 southbridge: - 10 USB 2.0/1.1 ports (4 ports at the mid-board, 6 ports at the back panel) ASUS Q-Fan ASUS CrashFree BIOS 3 ASUS EZ Flash 2 ASUS MyLogo 2™ 100% All High-quality Conductive Polymer Capacitors iCafe Memory Anti-theft (continued on the next page) ix
...memory of 4GB or more, Windows® 32-bit operating system may only recognize less than 3GB. M4A78LT PLUS specifications summary CPU Chipset System Bus Memory Expansion slots Storage / RAID LAN Audio USB ASUS unique features AMD® socket AM3 for AMD® Phenom™ II / Athlon™ II... (HD only) AMD® SB710 southbridge: - 10 USB 2.0/1.1 ports (4 ports at the mid-board, 6 ports at the back panel) ASUS Q-Fan ASUS CrashFree BIOS 3 ASUS EZ Flash 2 ASUS MyLogo 2™ 100% All High-quality Conductive Polymer Capacitors iCafe Memory Anti-theft (continued on the next page) ix
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M4A78LT PLUS specifications summary Back panel I/O ports Internal connectors BIOS Manageability Accessories Support DVD Form factor 1 x PS/2 Mouse port (green) 1 x PS/2 Keyboard port (purple) 1 x COM port 1 x LAN (... connector 1 x Speaker connector 1 x 24-pin EATX power connector 1 x 4-pin ATX 12V power connector 8Mb Flash ROM, AMI BIOS, PnP, DMI 2.0, WfM 2.0, ACPI 2.0a, SM BIOS 2.6, ASUS EZ Flash 2, ASUS CrashFree BIOS 3 WfM 2.0, DMI 2.0, WOR by PME, PXE 2 x Serial ATA cables 1 x I/O shield 1 x User Manual 1 x Support DVD 2 x iCafe Memory Anti-theft locks Drivers...
M4A78LT PLUS specifications summary Back panel I/O ports Internal connectors BIOS Manageability Accessories Support DVD Form factor 1 x PS/2 Mouse port (green) 1 x PS/2 Keyboard port (purple) 1 x COM port 1 x LAN (... connector 1 x Speaker connector 1 x 24-pin EATX power connector 1 x 4-pin ATX 12V power connector 8Mb Flash ROM, AMI BIOS, PnP, DMI 2.0, WfM 2.0, ACPI 2.0a, SM BIOS 2.6, ASUS EZ Flash 2, ASUS CrashFree BIOS 3 WfM 2.0, DMI 2.0, WOR by PME, PXE 2 x Serial ATA cables 1 x I/O shield 1 x User Manual 1 x Support DVD 2 x iCafe Memory Anti-theft locks Drivers...
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... accessories. Chapter 1 Product introduction Thank you install or remove any component, switch off the ATX power supply and detach its power cord. ASUS M4A78LT PLUS 1-1 Refer to page x for buying an ASUS® M4A78LT PLUS motherboard! Before you start installing the motherboard, and hardware devices on it on them. • Whenever you uninstall any component, place...
... accessories. Chapter 1 Product introduction Thank you install or remove any component, switch off the ATX power supply and detach its power cord. ASUS M4A78LT PLUS 1-1 Refer to page x for buying an ASUS® M4A78LT PLUS motherboard! Before you start installing the motherboard, and hardware devices on it on them. • Whenever you uninstall any component, place...
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DO NOT overtighten the screws! Place this side towards the rear of the chassis as indicated in the image below. 1.2.2 Screw holes Place six screws into the chassis in the correct orientation. M4A78LT PLUS 1-2 Chapter 1: Product introduction The edge with external ports goes to the chassis. Doing so can damage the motherboard. 1.2 Motherboard overview 1.2.1 Placement direction When installing the motherboard, ensure that you place it into the holes indicated by circles to secure the motherboard to the rear part of the chassis.
DO NOT overtighten the screws! Place this side towards the rear of the chassis as indicated in the image below. 1.2.2 Screw holes Place six screws into the chassis in the correct orientation. M4A78LT PLUS 1-2 Chapter 1: Product introduction The edge with external ports goes to the chassis. Doing so can damage the motherboard. 1.2 Motherboard overview 1.2.1 Placement direction When installing the motherboard, ensure that you place it into the holes indicated by circles to secure the motherboard to the rear part of the chassis.
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...+/AM2 socket. Ensure that the socket lever is lifted up to prevent bending the pins and damaging the CPU! 1.3.1 Installing the CPU To install a CPU: 1. M4A78LT PLUS M4A78LT PLUS CPU socket AM3 2. The CPU fits in completely. 1-4 Chapter 1: Product introduction otherwise, the CPU will not fit in only one correct orientation. Keyboard power (3-pin...
...+/AM2 socket. Ensure that the socket lever is lifted up to prevent bending the pins and damaging the CPU! 1.3.1 Installing the CPU To install a CPU: 1. M4A78LT PLUS M4A78LT PLUS CPU socket AM3 2. The CPU fits in completely. 1-4 Chapter 1: Product introduction otherwise, the CPU will not fit in only one correct orientation. Keyboard power (3-pin...
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... that comes with a small triangle. 4. 3. DO NOT force the CPU into the socket until it is in one correct orientation. When the CPU is locked. 6. ASUS M4A78LT PLUS 1-5 The CPU fits only in place, push down the socket lever to prevent bending the pins and damaging the CPU! Gold triangle 7. Carefully insert the... to the CPU_FAN connector on the side tab to connect the CPU fan connector! CPU_FAN CPU FAN PWM CPU FAN IN CPU FAN PWR GND M4A78LT PLUS M4A78LT PLUS CPU fan connector DO NOT forget to indicate that it fits in place.
... that comes with a small triangle. 4. 3. DO NOT force the CPU into the socket until it is in one correct orientation. When the CPU is locked. 6. ASUS M4A78LT PLUS 1-5 The CPU fits only in place, push down the socket lever to prevent bending the pins and damaging the CPU! Gold triangle 7. Carefully insert the... to the CPU_FAN connector on the side tab to connect the CPU fan connector! CPU_FAN CPU FAN PWM CPU FAN IN CPU FAN PWR GND M4A78LT PLUS M4A78LT PLUS CPU fan connector DO NOT forget to indicate that it fits in place.
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... labeled CPU_FAN. DO NOT forget to the module base. 5. Align the other end of the DDR3 DIMM sockets: DIMM_A1 DIMM_B1 M4A78LT PLUS Channel Channel A Channel B Sockets DIMM_A1 DIMM_B1 M4A78LT PLUS 240-pin DDR3 DIMM sockets ASUS M4A78LT PLUS 1-7 A DDR3 module has the same physical dimensions as a DDR2 DIMM but is notched differently to prevent installation on the...
... labeled CPU_FAN. DO NOT forget to the module base. 5. Align the other end of the DDR3 DIMM sockets: DIMM_A1 DIMM_B1 M4A78LT PLUS Channel Channel A Channel B Sockets DIMM_A1 DIMM_B1 M4A78LT PLUS 240-pin DDR3 DIMM sockets ASUS M4A78LT PLUS 1-7 A DDR3 module has the same physical dimensions as a DDR2 DIMM but is notched differently to prevent installation on the...
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...the higher-sized channel is the standard way of 3GB system memory if you want to DDR3 1066MHz. With ASUS design, this motherboard can support up to install 4GB or more memory on the motherboard. • This... 7 J1108BDSE-DJ-F 7 H5TQ2G83AFR 7 9GF22D9KPT 7 9HF22D9KPT(ECC) 7 9HF22D9KPT 7 9GF22D9KPT(ECC) 7 9BF27D9KPV 7-7-7-20 N2CB1G80CN-BE - - 7-7-7-20 - - M4A78LT PLUS Motherboard Qualified Vendors Lists (QVL) DDR3-1066MHz capability Vendors Part No. Size Crucial Crucial Crucial Crucial CT12864BA1067.8FF 1GB CT12872BA1067.9FF 1GB CT25664BA1067.16FF 2GB...
...the higher-sized channel is the standard way of 3GB system memory if you want to DDR3 1066MHz. With ASUS design, this motherboard can support up to install 4GB or more memory on the motherboard. • This... 7 J1108BDSE-DJ-F 7 H5TQ2G83AFR 7 9GF22D9KPT 7 9HF22D9KPT(ECC) 7 9HF22D9KPT 7 9GF22D9KPT(ECC) 7 9BF27D9KPV 7-7-7-20 N2CB1G80CN-BE - - 7-7-7-20 - - M4A78LT PLUS Motherboard Qualified Vendors Lists (QVL) DDR3-1066MHz capability Vendors Part No. Size Crucial Crucial Crucial Crucial CT12864BA1067.8FF 1GB CT12872BA1067.9FF 1GB CT25664BA1067.16FF 2GB...
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...; - 7-7-7-20 1.65V • • - 8-8-8-20 1.60V • • - 9-9-9-20 1.65V • A3P1GF3DGF 9-9-9-20 1.65V • • 8-8-8-24 1.5V • • (continued on the next page) ASUS M4A78LT PLUS 1-9 OCZ3G1333LV4GK 4GB(2 x 2GB) DS - OCZ3G1333LV8GK 8GB ( 2x 4GB ) DS - KHX1333C9D3UK2/4GX(XMP) 4GB(2 x 2GB) DS - GV32GB1333C9DC 2GB(2 x 1GB) DS - OCZ3P1333LV6GK 6GB(3 x 2GB) DS - OCZ3G13334GK 4GB...
...; - 7-7-7-20 1.65V • • - 8-8-8-20 1.60V • • - 9-9-9-20 1.65V • A3P1GF3DGF 9-9-9-20 1.65V • • 8-8-8-24 1.5V • • (continued on the next page) ASUS M4A78LT PLUS 1-9 OCZ3G1333LV4GK 4GB(2 x 2GB) DS - OCZ3G1333LV8GK 8GB ( 2x 4GB ) DS - KHX1333C9D3UK2/4GX(XMP) 4GB(2 x 2GB) DS - GV32GB1333C9DC 2GB(2 x 1GB) DS - OCZ3P1333LV6GK 6GB(3 x 2GB) DS - OCZ3G13334GK 4GB...
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... 1 1 Unlocked retaining clip DIMM slot key A DIMM is keyed with screws. This special design prevents easy pilfering of the DIMM slots keep your memory modules. ASUS M4A78LT PLUS 1-11 Failure to do so can cause severe damage to avoid damaging the DIMM. 3.
... 1 1 Unlocked retaining clip DIMM slot key A DIMM is keyed with screws. This special design prevents easy pilfering of the DIMM slots keep your memory modules. ASUS M4A78LT PLUS 1-11 Failure to do so can cause severe damage to avoid damaging the DIMM. 3.
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... slots, ensure that the drivers support "Share IRQ" or that complys with the slot and press firmly until the card is already installed in a chassis). 3. ASUS M4A78LT PLUS 1-13 Assign an IRQ to the chassis with it by adjusting the software settings. 1. When using PCI cards on the slot. 5. Align the card connector...
... slots, ensure that the drivers support "Share IRQ" or that complys with the slot and press firmly until the card is already installed in a chassis). 3. ASUS M4A78LT PLUS 1-13 Assign an IRQ to the chassis with it by adjusting the software settings. 1. When using PCI cards on the slot. 5. Align the card connector...
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... system boot failure! • If the steps above do not need to clear the RTC when the system hangs due to pins 1-2. 3. M4A78LT PLUS CLRTC 12 23 Normal (Default) M4A78LT PLUS Clear RTC RAM Clear RTC To erase the RTC RAM: 1. Shut down the key during the boot process and enter BIOS setup to...
... system boot failure! • If the steps above do not need to clear the RTC when the system hangs due to pins 1-2. 3. M4A78LT PLUS CLRTC 12 23 Normal (Default) M4A78LT PLUS Clear RTC RAM Clear RTC To erase the RTC RAM: 1. Shut down the key during the boot process and enter BIOS setup to...
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...computer by pressing a key on the +5VSB lead, and a corresponding setting in the BIOS. USBPW1-6 12 23 +5V +5VSB (Default) M4A78LT PLUS USBPW7-10 12 23 +5V +5VSB (Default) M4A78LT PLUS USB device wake-up feature. This feature requires an ATX power supply that can wake up the compurer from S1 sleep mode... jumper allows you to pins 2-3 (+5VSB), you set this jumper to enable or disable the keyboard wake-up 3. KBPWR +5V +5VSB (Default) 12 23 M4A78LT PLUS M4A78LT PLUS Keyboard power setting ASUS M4A78LT PLUS 1-15 When you can supply at least 1A on the keyboard. 2.
...computer by pressing a key on the +5VSB lead, and a corresponding setting in the BIOS. USBPW1-6 12 23 +5V +5VSB (Default) M4A78LT PLUS USBPW7-10 12 23 +5V +5VSB (Default) M4A78LT PLUS USB device wake-up feature. This feature requires an ATX power supply that can wake up the compurer from S1 sleep mode... jumper allows you to pins 2-3 (+5VSB), you set this jumper to enable or disable the keyboard wake-up 3. KBPWR +5V +5VSB (Default) 12 23 M4A78LT PLUS M4A78LT PLUS Keyboard power setting ASUS M4A78LT PLUS 1-15 When you can supply at least 1A on the keyboard. 2.
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...! Connect one end of the front panel audio I /O module that supports either High Definition Audio or AC`97 audio standard. ASUS M4A78LT PLUS 1-17 DO NOT place jumper caps on the motherboard, ensuring that you connect a high-definition front panel audio module to this ...CPU_FAN; 3-pin CHA_FAN) Connect the fan cables to this connector. Front panel audio connector (10-1 pin AAFP) This connector is purchased separately. M4A78LT PLUS AAFP SENSE2_RETUR SENSE1_RETUR PRESENCE# GND PORT2 L NC SENSE_SEND PORT2 R NC PORT1 R NC PORT1 L PIN 1 AGND Line out_L NC Line out_R...
...! Connect one end of the front panel audio I /O module that supports either High Definition Audio or AC`97 audio standard. ASUS M4A78LT PLUS 1-17 DO NOT place jumper caps on the motherboard, ensuring that you connect a high-definition front panel audio module to this ...CPU_FAN; 3-pin CHA_FAN) Connect the fan cables to this connector. Front panel audio connector (10-1 pin AAFP) This connector is purchased separately. M4A78LT PLUS AAFP SENSE2_RETUR SENSE1_RETUR PRESENCE# GND PORT2 L NC SENSE_SEND PORT2 R NC PORT1 R NC PORT1 L PIN 1 AGND Line out_L NC Line out_R...
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...connectors are uncertain about the minimum power supply requirement for your system, refer to the Recommended Power Supply Wattage Calculator at http://support.asus. ATX12V EATXPWR +12V DC +12V DC M4A78LT PLUS 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 PLUS ATX power connectors GND +5 Volts +5 Volts +5 Volts -5 Volts GND GND GND PSON# GND -12 Volts +3 Volts • For a fully ...
...connectors are uncertain about the minimum power supply requirement for your system, refer to the Recommended Power Supply Wattage Calculator at http://support.asus. ATX12V EATXPWR +12V DC +12V DC M4A78LT PLUS 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 PLUS ATX power connectors GND +5 Volts +5 Volts +5 Volts -5 Volts GND GND GND PSON# GND -12 Volts +3 Volts • For a fully ...
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... RSATA_TXN4 GND RSATA_RXP4 RSATA_RXN4 GND GND RSATA_RXN1 RSATA_RXP1 GND RSATA_TXN1 RSATA_TXP1 GND GND RSATA_RXN2 RSATA_RXP2 GND RSATA_TXN2 RSATA_TXP2 GND M4A78LT PLUS SATA3G_1 SATA3G_2 M4A78LT PLUS SATA connectors • These connectors are set to these connectors, set the type of the SATA connectors in...of the SATA connectors in the BIOS to hear system beeps and warnings. +5V GND GND Speaker Out SPEAKER M4A78LT PLUS PIN 1 M4A78LT PLUS Speaker out connector ASUS M4A78LT PLUS 1-19 If you intend to [RAID]. See section 2.3.4 SATA Configuration for Serial ATA hard disk drives. ...
... RSATA_TXN4 GND RSATA_RXP4 RSATA_RXN4 GND GND RSATA_RXN1 RSATA_RXP1 GND RSATA_TXN1 RSATA_TXP1 GND GND RSATA_RXN2 RSATA_RXP2 GND RSATA_TXN2 RSATA_TXP2 GND M4A78LT PLUS SATA3G_1 SATA3G_2 M4A78LT PLUS SATA connectors • These connectors are set to these connectors, set the type of the SATA connectors in...of the SATA connectors in the BIOS to hear system beeps and warnings. +5V GND GND Speaker Out SPEAKER M4A78LT PLUS PIN 1 M4A78LT PLUS Speaker out connector ASUS M4A78LT PLUS 1-19 If you intend to [RAID]. See section 2.3.4 SATA Configuration for Serial ATA hard disk drives. ...
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... disk drive activity LED (2-pin +HDLED) This 2-pin connector is for the chassis-mounted reset button for the system power LED. 6. Ground Reset +HDLED RESET M4A78LT PLUS System panel connector • System power LED (2-pin PLED) This 2-pin connector is for system reboot without turning off button (2-pin PWRBTN) This connector is... Activity LED. The system power LED lights up or flashes when data is read from or written to this connector. PLED PWRBTN PLED+ PLEDPWR GND M4A78LT PLUS F_PANEL PIN 1 IDE_LED+ IDE_LED-
... disk drive activity LED (2-pin +HDLED) This 2-pin connector is for the chassis-mounted reset button for the system power LED. 6. Ground Reset +HDLED RESET M4A78LT PLUS System panel connector • System power LED (2-pin PLED) This 2-pin connector is for system reboot without turning off button (2-pin PWRBTN) This connector is... Activity LED. The system power LED lights up or flashes when data is read from or written to this connector. PLED PWRBTN PLED+ PLEDPWR GND M4A78LT PLUS F_PANEL PIN 1 IDE_LED+ IDE_LED-