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Contents Notices...vi Safety information vii About this guide vii M4A78-EM 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 fan 1-10 1.7 System memory...
Contents Notices...vi Safety information vii About this guide vii M4A78-EM 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 fan 1-10 1.7 System memory...
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... Part 15 of the crossed out wheeled bin indicates that the battery should not be placed in our products at ASUS REACH website at http://green.asus.com/english/REACH.htm. This symbol of the FCC Rules. Notices Federal Communications Commission Statement This device complies with... with the REACH (Registration, Evaluation, Authorisation, and Restriction of the monitor to Part 15 of the FCC Rules. DO NOT throw the motherboard in municipal waste. Check local regulations for radio noise emissions from that to the following two conditions: • This device may cause undesired...
... Part 15 of the crossed out wheeled bin indicates that the battery should not be placed in our products at ASUS REACH website at http://green.asus.com/english/REACH.htm. This symbol of the FCC Rules. Notices Federal Communications Commission Statement This device complies with... with the REACH (Registration, Evaluation, Authorisation, and Restriction of the monitor to Part 15 of the FCC Rules. DO NOT throw the motherboard in municipal waste. Check local regulations for radio noise emissions from that to the following two conditions: • This device may cause undesired...
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...About this guide is broken, do not try to change system settings through the BIOS Setup menus. Operation safety • Before installing the motherboard and adding devices on a stable surface. • If you are not sure about the voltage of the BIOS parameters are unplugged. ...If the power supply is organized This guide contains the following parts: • Chapter 1: Product introduction This chapter describes the features of the motherboard and the new technology it supports. • Chapter 2: BIOS information This chapter tells how to fix it , carefully read all the manuals...
...About this guide is broken, do not try to change system settings through the BIOS Setup menus. Operation safety • Before installing the motherboard and adding devices on a stable surface. • If you are not sure about the voltage of the BIOS parameters are unplugged. ...If the power supply is organized This guide contains the following parts: • Chapter 1: Product introduction This chapter describes the features of the motherboard and the new technology it supports. • Chapter 2: BIOS information This chapter tells how to fix it , carefully read all the manuals...
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... support and accelerates data transfer rate up to 5200MT/s via HyperTransport™ 3.0based system bus. ASUS M4A78-EM 1-1 Before you for the following items. Motherboard Cables Accessories Application DVD Documentations ASUS M4A78-EM motherboard 1 x Serial ATA cable 1 x UltraDMA 133/100/66 cable 1 x I/O shield ASUS motherboard Support DVD User Manual If any of the above items is damaged or missing, contact...
... support and accelerates data transfer rate up to 5200MT/s via HyperTransport™ 3.0based system bus. ASUS M4A78-EM 1-1 Before you for the following items. Motherboard Cables Accessories Application DVD Documentations ASUS M4A78-EM motherboard 1 x Serial ATA cable 1 x UltraDMA 133/100/66 cable 1 x I/O shield ASUS motherboard Support DVD User Manual If any of the above items is damaged or missing, contact...
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...• Hybrid CrossFireX is supported by default for system stability. • We recommend that you install the DDR2 1200 memory modules on the ASUS official Memory Qualified Vendors Lists (QVL). AMD® Socket AM2+/AM2 Phenom™ x4 / Phenom™ x3 / Athlon™ x2...DDR2 1200/1066 DIMM is the latest AMD chipset designed for a smoother and faster computing environment. AMD Cool 'n' Quiet Technology This motherboard supports the AMD Cool 'n' Quiet technology which support Hybrid CrossFireX™. 1-2 Chapter 1: Product introduction It features dual-channel DDR2 1066...
...• Hybrid CrossFireX is supported by default for system stability. • We recommend that you install the DDR2 1200 memory modules on the ASUS official Memory Qualified Vendors Lists (QVL). AMD® Socket AM2+/AM2 Phenom™ x4 / Phenom™ x3 / Athlon™ x2...DDR2 1200/1066 DIMM is the latest AMD chipset designed for a smoother and faster computing environment. AMD Cool 'n' Quiet Technology This motherboard supports the AMD Cool 'n' Quiet technology which support Hybrid CrossFireX™. 1-2 Chapter 1: Product introduction It features dual-channel DDR2 1066...
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...gives you quick access to provide efficient power management for advanced operating systems. Serial ATA 3Gb/s technology and SATA-On-The-Go This motherboard supports hard drives based on environment that contains the BIOS file. 1.3.2 64-bit CPU support 64-bit computing, the next generation ...auto-recovery tool that replaces the current 32-bit architecture, delivers advanced system performance, faster memory access, and increased productivity. This motherboard provides excellent compatibility and flexibility by supporting both 64-bit and 32-bit architecture. ASUS M4A78-EM 1-3
...gives you quick access to provide efficient power management for advanced operating systems. Serial ATA 3Gb/s technology and SATA-On-The-Go This motherboard supports hard drives based on environment that contains the BIOS file. 1.3.2 64-bit CPU support 64-bit computing, the next generation ...auto-recovery tool that replaces the current 32-bit architecture, delivers advanced system performance, faster memory access, and increased productivity. This motherboard provides excellent compatibility and flexibility by supporting both 64-bit and 32-bit architecture. ASUS M4A78-EM 1-3
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Green ASUS This motherboard and its packaging comply with the ASUS vision of Hazardous Substances (RoHS). C.P.R. This is a unique power saving technology that detects the current system loadings and adjusts the power...Parameter Recall) The BIOS C.P.R. feature automatically restores the CPU default settings when the system hangs due to ensure a quiet, cool, and efficient operation. ASUS Q-Fan ASUS Q-Fan technology intelligently adjusts CPU fan speeds according to system loading to overclocking failure. eliminates the need to their default settings. 1-4 Chapter 1: Product ...
Green ASUS This motherboard and its packaging comply with the ASUS vision of Hazardous Substances (RoHS). C.P.R. This is a unique power saving technology that detects the current system loadings and adjusts the power...Parameter Recall) The BIOS C.P.R. feature automatically restores the CPU default settings when the system hangs due to ensure a quiet, cool, and efficient operation. ASUS Q-Fan ASUS Q-Fan technology intelligently adjusts CPU fan speeds according to system loading to overclocking failure. eliminates the need to their default settings. 1-4 Chapter 1: Product ...
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.... • Unplug the power cord from the wall socket before removing or plugging in any motherboard component. 1.4 Before you proceed Take note of the onboard LED. ASUS M4A78-EM 1-5 Onboard LED The motherboard comes with the component. • Before you install or remove any component. • Before handling components, use a ... mode. Failure to do so may cause severe damage to avoid touching the ICs on a grounded antistatic pad or in soft-off the ATX power supply and detach its power cord. This is ON, in sleep mode, or in the bag that came with a standby power LED...
.... • Unplug the power cord from the wall socket before removing or plugging in any motherboard component. 1.4 Before you proceed Take note of the onboard LED. ASUS M4A78-EM 1-5 Onboard LED The motherboard comes with the component. • Before you install or remove any component. • Before handling components, use a ... mode. Failure to do so may cause severe damage to avoid touching the ICs on a grounded antistatic pad or in soft-off the ATX power supply and detach its power cord. This is ON, in sleep mode, or in the bag that came with a standby power LED...
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The edge with external ports goes to the chassis. Place this side towards the rear of the chassis as indicated in the correct orientation. DO NOT overtighten the screws! 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 eight screws into the holes indicated by circles to secure the motherboard to the rear part of the chassis. 1-6 Chapter 1: Product introduction
The edge with external ports goes to the chassis. Place this side towards the rear of the chassis as indicated in the correct orientation. DO NOT overtighten the screws! 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 eight screws into the holes indicated by circles to secure the motherboard to the rear part of the chassis. 1-6 Chapter 1: Product introduction
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... fan connectors (4-pin CPU_FAN, 3-pin PWR_FAN, and 3-pin CHA_FAN) 2. CPU Socket AM2+ 4. Serial port connector (10-1 pin COM1) 7. ATX power connectors (24-pin EATXPWR, 4-pin ATX12V) 3. IDE connector (40-1 pin PRI_IDE) 8. Digital audio connector (4-1 pin SPDIF_OUT) 1-24 14...23 13. Front panel audio connector (10-1 pin AAFP) 1-23 15. 1.5.3 Motherboard layout 1.5.4 Layout contents Connectors/Jumpers/Slots/LED 1. Optical drive audio connector (4-pin CD) 1-25 Page 1-18 1-5 1-24 1-26 1-27 1-27 1-26 ASUS M4A78-EM 1-7 Clear RTC RAM (3-pin CLRTC) 1-22 10. Onboard LED (SB_PWR) ...
... fan connectors (4-pin CPU_FAN, 3-pin PWR_FAN, and 3-pin CHA_FAN) 2. CPU Socket AM2+ 4. Serial port connector (10-1 pin COM1) 7. ATX power connectors (24-pin EATXPWR, 4-pin ATX12V) 3. IDE connector (40-1 pin PRI_IDE) 8. Digital audio connector (4-1 pin SPDIF_OUT) 1-24 14...23 13. Front panel audio connector (10-1 pin AAFP) 1-23 15. 1.5.3 Motherboard layout 1.5.4 Layout contents Connectors/Jumpers/Slots/LED 1. Optical drive audio connector (4-pin CD) 1-25 Page 1-18 1-5 1-24 1-26 1-27 1-27 1-26 ASUS M4A78-EM 1-7 Clear RTC RAM (3-pin CLRTC) 1-22 10. Onboard LED (SB_PWR) ...
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...;-100° angle; Small triangle Gold triangle 1-8 Chapter 1: Product introduction Right 1.6 Central Processing Unit (CPU) This motherboard comes with a small triangle. 4. otherwise, the CPU will not fit in place. Locate the CPU socket on the motherboard. 2. DO NOT force the CPU into the socket until it up to prevent bending the pins...
...;-100° angle; Small triangle Gold triangle 1-8 Chapter 1: Product introduction Right 1.6 Central Processing Unit (CPU) This motherboard comes with a small triangle. 4. otherwise, the CPU will not fit in place. Locate the CPU socket on the motherboard. 2. DO NOT force the CPU into the socket until it up to prevent bending the pins...
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5. The lever clicks on the motherboard. DO NOT forget to secure the CPU. You can occur if you fail to plug this connector. Hardware monitoring errors can also refer to indicate that comes with the heatsink package. Install a CPU heatsink and fan following the instructions that it is in place, push down the socket lever to connect the CPU fan connector! Connect the CPU fan cable to the CPU_FAN connector on the side tab to section 1.6.2 Installing heatsink and fan for instructions. 7. When the CPU is locked. 6. ASUS M4A78-EM 1-9
5. The lever clicks on the motherboard. DO NOT forget to secure the CPU. You can occur if you fail to plug this connector. Hardware monitoring errors can also refer to indicate that comes with the heatsink package. Install a CPU heatsink and fan following the instructions that it is in place, push down the socket lever to connect the CPU fan connector! Connect the CPU fan cable to the CPU_FAN connector on the side tab to section 1.6.2 Installing heatsink and fan for instructions. 7. When the CPU is locked. 6. ASUS M4A78-EM 1-9
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... the retention mechanism. If the instructions in this section do not have to remove the retention module base when installing the CPU or installing other motherboard components. • If you purchased a separate CPU heatsink and fan assembly, ensure that you install the heatsink and fan assembly. Place the heatsink on top... and fan assembly. To install the CPU heatsink and fan: 1. 1.6.2 Installing the heatsink and fan Ensure that a Thermal Interface Material is already installed on the motherboard upon purchase. • You do not match the CPU documentation, follow the latter. 2.
... the retention mechanism. If the instructions in this section do not have to remove the retention module base when installing the CPU or installing other motherboard components. • If you purchased a separate CPU heatsink and fan assembly, ensure that you install the heatsink and fan assembly. Place the heatsink on top... and fan assembly. To install the CPU heatsink and fan: 1. 1.6.2 Installing the heatsink and fan Ensure that a Thermal Interface Material is already installed on the motherboard upon purchase. • You do not match the CPU documentation, follow the latter. 2.
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...Push down the retention bracket lock on the motherboard labeled CPU_FAN. DO NOT forget to the 184-pin DDR DIMM. Align the other end of the DDR2 DIMM sockets: Channel Channel A Channel B Sockets DIMM_A1 and DIMM_A2 DIMM_B1 and DIMM_B2 ASUS M4A78-EM 1-11 The figure illustrates the location of ... to the connector on the retention mechanism to secure the heatsink and fan to plug this connector. 1.7 System memory 1.7.1 Overview The motherboard comes with four Double Data Rate 2 (DDR2) Dual Inline Memory Modules (DIMM) sockets. DDR2 DIMMs are notched differently to the retention module base....
...Push down the retention bracket lock on the motherboard labeled CPU_FAN. DO NOT forget to the 184-pin DDR DIMM. Align the other end of the DDR2 DIMM sockets: Channel Channel A Channel B Sockets DIMM_A1 and DIMM_A2 DIMM_B1 and DIMM_B2 ASUS M4A78-EM 1-11 The figure illustrates the location of ... to the connector on the retention mechanism to secure the heatsink and fan to plug this connector. 1.7 System memory 1.7.1 Overview The motherboard comes with four Double Data Rate 2 (DDR2) Dual Inline Memory Modules (DIMM) sockets. DDR2 DIMMs are notched differently to the retention module base....
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...the higher-sized channel is then mapped for single-channel operation. • Always install DIMMs with the same CAS latency. The motherboard supports up of 2) G.SKILL AD21066E002GU 78.0AG9S.9K4 78.AAGAL.9KZ CM2X1024-8500C5 CM2X1024-8500C5D CM2X2048-8500C5D BL12864AA1065.8FE5 CT25664AA1067.16FE1 ...;w��s® OS if you install 4GB or more memory on the motherboard. • This motherboard does not support DIMMs made up to install 4GB or more memory on each slot. M4A78-EM Motherboard Qualified Vendors Lists (QVL) DDR2-1200(O.C.)MHz capability Size Vendor Part No. ...
...the higher-sized channel is then mapped for single-channel operation. • Always install DIMMs with the same CAS latency. The motherboard supports up of 2) G.SKILL AD21066E002GU 78.0AG9S.9K4 78.AAGAL.9KZ CM2X1024-8500C5 CM2X1024-8500C5D CM2X2048-8500C5D BL12864AA1065.8FE5 CT25664AA1067.16FE1 ...;w��s® OS if you install 4GB or more memory on the motherboard. • This motherboard does not support DIMMs made up to install 4GB or more memory on each slot. M4A78-EM Motherboard Qualified Vendors Lists (QVL) DDR2-1200(O.C.)MHz capability Size Vendor Part No. ...
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... keyed with a notch so that it flips out with your fingers when pressing the retaining 1 clips. Firmly insert the DIMM into a socket to both the motherboard and the components. 1. DO NOT force a DIMM into the socket until the retaining clips snap back in only one direction. Locked Retaining Clip 1.7.4 Removing a DIMM...
... keyed with a notch so that it flips out with your fingers when pressing the retaining 1 clips. Firmly insert the DIMM into a socket to both the motherboard and the components. 1. DO NOT force a DIMM into the socket until the retaining clips snap back in only one direction. Locked Retaining Clip 1.7.4 Removing a DIMM...
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... cards that comply with PCI specifications. 1.8.4 PCI Express x1 slot This motherboard supports PCI Express x1 network cards, SCSI cards, and other cards that comply with it by adjusting the software settings. 1. ASUS M4A78-EM 1-17 1.8 Expansion slots In the future, you removed earlier. 6. ...Keep the screw for the expansion card. Turn on shared slots, ensure that the drivers support "Share IRQ" or that you physical injury and damage motherboard components. 1.8.1 Installing an...
... cards that comply with PCI specifications. 1.8.4 PCI Express x1 slot This motherboard supports PCI Express x1 network cards, SCSI cards, and other cards that comply with it by adjusting the software settings. 1. ASUS M4A78-EM 1-17 1.8 Expansion slots In the future, you removed earlier. 6. ...Keep the screw for the expansion card. Turn on shared slots, ensure that the drivers support "Share IRQ" or that you physical injury and damage motherboard components. 1.8.1 Installing an...
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This port is for any DVI-D compatible device and is Realtek High Definition Audio (the name may be different based on your motherboard: Dual display outputs DVI + D-Sub DVI + HDMI HDMI + D-Sub Supported • • Not supported • • During POST, only the monitor connected to configure the ...
This port is for any DVI-D compatible device and is Realtek High Definition Audio (the name may be different based on your motherboard: Dual display outputs DVI + D-Sub DVI + HDMI HDMI + D-Sub Supported • • Not supported • • During POST, only the monitor connected to configure the ...