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Onboard LEDs

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1.8 Onboard LEDs 1. Standby power LED (SB_PWR) The motherboard comes with a standby power LED that lights up to indicate that the system is ON, in sleep mode, or in soft-off mode. This is a reminder that you should shut down the system and unplug the power cable before removing or plugging in any motherboard component. The illustration below shows the location of the onboard LED. 2. DRAM LED (DRAM_LED) The DRAM_LED lights up when the DIMM is not properly installed. Turn off the system and reinstall the DIMM before using the MemOK! function. Chapter 1: Product introduction 1-19

Section	Page
Safety information	5
About this guide	6
P8Z77-M specifications summary	7
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	13
1.3 Central Processing Unit (CPU)	14
1.3.1 Installing the CPU	14
1.3.2 CPU heatsink and fan assembly installation	16
1.4 System memory	17
1.4.1 Overview	17
1.4.2 Memory configurations	18
2.3.4 DIMM installation	24
1.5 Expansion slots	25
1.5.1 Installing an expansion card	25
1.5.3 PCI Express x1 slot	26
1.5.4 PCI Express x16 slot	26
1.5.2 Configuring an expansion card	26
1.6 Onboard switches	27
1.7 USB BIOS Flashback	28
1.8 Onboard LEDs	29
1.9 Jumpers	30
1.10 Connectors	31
1.10.1 Rear panel connectors	31
1.10.2 Internal connectors	32
1.11 Software support	39
1.11.1 Installing an operating system	39
1.11.2 Support DVD information	39
Chapter 2	41
BIOS information	41
2.1 Managing and updating your BIOS	41
2.1.1 ASUS Update utility	41
2.1.2 ASUS EZ Flash 2	42
2.1.3 ASUS CrashFree BIOS 3 utility	43
2.1.4 ASUS BIOS Updater	44
2.2 BIOS setup program	46
2.2.1 EZ Mode	47
2.2.2 Advanced Mode	48
2.3 Main menu	50
2.3.1 System Language [English]	50
2.3.2 System Date	50
2.3.3 System Time	50
2.3.4 Security	50
2.4 Ai Tweaker menu	52
2.4.1 Ai Overclock Tuner [Auto]	53
2.4.2 OC Tuner	54
2.4.3 DRAM Timing Control	55
2.4.4 CPU Power Management	55
2.4.5 DIGI+ VRM	55
2.4.6 CPU Voltage [Offset Mode]	56
2.5 Advanced menu	58
2.5.1 CPU Configuration	58
2.5.2 PCH Configuration	60
2.5.3 SATA Configuration	60
2.5.4 System Agent Configuration	60
2.5.5 USB Configuration	61
2.5.6 Onboard Devices Configuration	62
2.5.7 APM	62
2.5.8 Network stack [Disabled Link]	63
2.6 Monitor menu	64
2.7 Boot menu	67
2.8 Tools menu	69
2.8.1 ASUS EZ Flash 2 Utility	69
2.8.2 ASUS O.C. Profile	69
2.8.3 ASUS SPD Information	69

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1-19

Chapter 1: Product introduction

Standby power LED (SB_PWR)

The motherboard comes with a standby power LED that lights up to indicate that the

system is ON, in sleep mode, or in soft-off mode. This is a reminder that you should

shut down the system and unplug the power cable before removing or plugging in any

motherboard component. The illustration below shows the location of the onboard LED.

1.8

Onboard LEDs

DRAM LED (DRAM_LED)

The DRAM_LED lights up when the DIMM is not properly installed. Turn off the system

and reinstall the DIMM before using the MemOK! function.