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Asus M4A78LT PLUS User Manual - Page 28

M4A78LT PLUS ATX power connectors

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3. 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 fit these connectors in only one orientation. Find the proper orientation and push down firmly until the connectors completely fit. 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 configured system, we recommend that you use a power supply unit (PSU) that complies with ATX 12 V Specification 2.0 (or later version) and provides a minimum power of 300 W. • Do not forget to connect the 4-pin ATX12 V power plug; otherwise, the system will not boot. • We recommend that you use a PSU with higher power output when configuring a system with more power-consuming devices. The system may become unstable or may not boot up if the power is inadequate. • If you are uncertain about the minimum power supply requirement for your system, refer to the Recommended Power Supply Wattage Calculator at http://support.asus. com/PowerSupplyCalculator/PSCalculator.aspx?SLanguage=en-us for details. 1-18 Chapter 1: Product introduction

Section	Page
Notices	6
Safety information	7
About this guide	8
M4A78LT PLUS specifications summary	9
Chapter 1	11
Product introduction	11
1.1 Before you proceed	11
1.2 Motherboard overview	12
1.2.1 Placement direction	12
1.2.2 Screw holes	12
1.2.3 Motherboard layout	13
1.2.4 Layout contents	14
1.3 Central Processing Unit (CPU)	14
1.3.1 Installing the CPU	14
1.3.2 Installing the heatsink and fan	16
1.4 System memory	17
1.4.1 Overview	17
1.4.2 Memory configurations	18
1.4.3 Installing a DIMM	21
1.4.4 Removing a DIMM	22
1.5 Expansion slots	23
1.5.1 Installing an expansion card	23
1.5.2 Configuring an expansion card	23
1.5.3 PCI slot	23
1.5.4 PCI Express x1 slot	23
1.5.5 PCI Express x16 slot	23
1.6 Jumpers	24
1.7 Connectors	26
1.7.1 Rear panel ports	26
1.7.2 Internal connectors	27
1.8 Software support	32
1.8.1 Installing an operating system	32
1.8.2 Support DVD information	32
Chapter 2	33
BIOS information	33
2.1 Managing and updating your BIOS	33
2.1.1 ASUS Update utility	33
2.1.2 ASUS EZ Flash 2	34
2.1.3 ASUS CrashFree BIOS 3	35
2.1.4 ASUS BIOS Updater	36
2.2 BIOS setup program	39
2.2.1 BIOS menu screen	40
2.2.2 Menu bar	40
2.2.3 Navigation keys	40
2.2.4 Menu items	41
2.2.5 Submenu items	41
2.2.6 Configuration fields	41
2.2.7 Pop-up window	41
2.2.8 Scroll bar	41
2.2.9 General help	41
2.3 Main menu	42
2.3.1 System Time [xx:xx:xx]	42
2.3.2 System Date [Day xx/xx/xxxx]	42
2.3.3 SATA 1~4	42
2.3.4 SATA Configuration	43
2.3.5 System Information	44
2.4 Advanced menu	45
2.4.1 CPU Configuration	45
2.4.2 Chipset	46
2.4.3 Onboard Devices Configuration	46
2.4.4 PCIPnP	47
2.4.5 USB Configuration	47
2.5 Power menu	48
2.5.1 Suspend Mode [Auto]	48
2.5.2 ACPI 2.0 Support [Enabled]	48
2.5.3 ACPI APIC Support [Enabled]	49
2.5.4 APM Configuration	49
2.5.5 HW Monitor Configuration	49
2.5.6 EuP Ready [Disabled]	50
2.6 Boot menu	50
2.6.1 Boot Device Priority	51
2.6.2 Boot Settings Configuration	51
2.6.3 Security	51
2.7 Tools menu	53
2.7.1 ASUS EZ Flash 2	53
2.7.2 ASUS O.C. Profile	53