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Asus Z77-A Z77-A User's Manual - Page 38

Internal connectors

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GND CPU FAN PWR CPU FAN IN CPU FAN PWM GND CHA FAN PWR CHA FAN IN CHA FAN PWM 1.8.2 Internal connectors 1. CPU and chassis fan connectors (4-pin CPU_FAN, 4-pin CHA_FAN1/2; 3-pin PWR_FAN) Connect the fan cables to the fan connectors on the motherboard, ensuring that the black wire of each cable matches the ground pin of the connector. CPU_FAN CHA_FAN2 CHA_FAN1 PWR_FAN Z77-A Z77-A CPU fan connector DO NOT forget to connect the fan cables to the fan connectors. Insufficient air flow inside the system may damage the motherboard components. These are not jumpers! DO NOT place jumper caps on the fan connectors. • The CPU_FAN connector supports a CPU fan of maximum 1A(12W) fan power. • The CPU_FAN and CHA_FAN connectors support the ASUS Fan Xpert feature. CHA FAN PWM CHA FAN IN CHA FAN PWR GND Rotation +12V GND 1-26 Chapter 1: Product introduction

Section	Page
Safety information	6
About this guide	7
Z77-A specifications summary	9
Package contents	12
Product introduction	13
1.1 Product highlights	13
1.2 Before you proceed	16
1.3 Motherboard overview	17
1.3.1 Placement direction	17
1.3.2 Screw holes	17
1.3.3 Motherboard layout	18
1.3.4 Layout contents	19
1.4 Intel® CPU LGA1155 socket	19
1.4.1 CPU installation	20
1.4.2 CPU heatsink and fan assembly installation	21
1.5 System memory	23
1.5.1 Overview	23
1.5.2 Memory configurations	24
1.5.3 Installing a DIMM	31
1.6 Expansion slots	32
1.7 Jumpers	34
1.8 Connectors	36
1.8.1 Rear panel ports	36
1.8.2 Internal connectors	38
1.9 Software support	46
1.9.1 Installing an operating system	46
1.9.2 Support DVD information	46
BIOS information	47
2.1 Managing and updating your BIOS	47
2.1.1 ASUS Update utility	47
2.1.2 ASUS EZ Flash 2	48
2.1.3 ASUS CrashFree BIOS 3 utility	49
2.1.4 ASUS BIOS Updater	50
2.2 BIOS setup program	53
2.3 Main menu	57
2.3.1 System Language [English]	57
2.3.2 System Date [Day xx/xx/xxxx]	57
2.3.3 System Time [xx:xx:xx]	57
2.3.4 Security	57
2.4 Ai Tweaker menu	59
2.4.1 Ai Overclock Tuner [Auto]	60
2.4.2 ASUS MultiCore Enhancement [Enabled]	60
2.4.3 Turbo Ratio [Auto]	60
2.4.4 Internal PLL Overvoltage [Auto]	60
2.4.5 Memory Frequency [Auto]	61
2.4.6 iGPU Max. Frequency [Auto]	61
2.4.7 EPU Power Saving Mode [Disabled]	61
2.4.8 OC Tuner	61
2.4.9 DRAM Timing Control	61
2.4.10 CPU Power Management	61
2.4.11 DIGI+ VRM	62
2.5 Advanced menu	66
2.5.1 CPU Configuration	66
2.5.2 PCH Configuration	69
2.5.3 SATA Configuration	70
2.5.4 System Agent Configuration	71
2.5.5 USB Configuration	72
2.5.6 Onboard Devices Configuration	73
2.5.7 APM	74
2.5.8 Network Stack	75
2.6 Monitor menu	76
2.6.1 CPU Temperature / MB Temperature [xxxºC/xxxºF]	77
2.6.2 CPU / Chassis Fan 1/2 / PWR Fan Speed [xxxx RPM] or [Ignore] / [N/A]	77
2.6.3 CPU Voltage, 3.3V Voltage, 5V Voltage, 12V Voltage	77
2.6.4 CPU Q-Fan Control [Enabled]	77
2.6.5 CPU Fan Speed Low Limit [200 RPM]	77
2.6.6 Chassis1/2 Q-Fan Control [Enabled]	78
2.6.7 Chassis Fan Speed Low Limit [600 RPM]	78
2.6.8 Anti Surge Support [Enabled]	79
2.7 Boot menu	80
2.7.1 Fast Boot [Enabled]	81
2.7.2 Full Screen Logo [Enabled]	81
2.7.3 Post Delay Time [3 sec]	82
2.7.4 Bootup NumLock State [On]	82
2.7.5 Wait for ‘F1’ If Error [Enabled]	82
2.7.6 Option ROM Messages [Force BIOS]	82
2.7.7 Interrupt 19 Capture [Postponed]	82
2.7.8 Setup Mode [EZ Mode]	82
2.7.9 CSM (Compatibility Support Module)	82
2.7.10 Secure Boot	84
2.7.11 Boot Option Priorities	85
2.7.12 Boot Override	85
2.8 Tools menu	86
2.8.1 ASUS EZ Flash 2 Utility	86
2.8.2 ASUS O.C. Profile	86
2.8.3 ASUS SPD Information	86
2.9 Exit menu	87
Appendices	89
Notices	89