Gigabyte GA-MA790X-UD4 User Manual download pdf (Page 30)

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GA-MA790X-UD4 Motherboard - 30 -

16) COM (Serial Port Header)

The COM header can provide one serial port via an optional COM port cable. For purchasing the

optional COM port cable, please contact the local dealer.

Pin No. Definition

1 NDCD -

2 NSIN

3 NSOUT

4 NDTR -

5 GND

6 NDSR -

7 NRTS -

8 NCTS -

9 NRI -

10 No Pin

17) CI (Chassis Intrusion Header)

This motherboard provides a chassis detection feature that detects if the chassis cover has been

removed. This function requires a chassis with chassis intrusion detection design.

Pin No. Definition

1 Signal

2 GND

1 2 ... 25 26 27 28 29 30 31 32 33 34 35 ... 99 100

GA-MA790X-UD4 1
Motherboard 2
Dec. 5, 2008 2
Copyright 3
Disclaimer 3
Documentation Classifications 3
Table of Contents 4
Box Contents 6
Optional Items 6
Block Diagram 8
1-1 Installation Precautions 9
1-2 Product Specifications 10
(Note 4) 11
(Note 5) 12
(Note 6) 12
1-3-1 Installing the CPU 13
CPU Socket Locking 14
1-4 Installing the Memory 16
1-4-2 Installing a Memory 17
PCI Express x1 Slot 18
PCI Slot 18
PCI Express x16 Slot 18
CrossFireX.) 19
1-7 Back Panel Connectors 20
1-8 Internal Connectors 22
7) IDE (IDE Connector) 25
10) BATTERY 26
System Status LED 27
S1 Blinking 27
S3/S4/S5 Off 27
16) COM (Serial Port Header) 30
Open: Normal 31
Short: Clear CMOS Values 31
Chapter 2 BIOS Setup 33
2-1 Startup Screen 34
2-2 The Main Menu 35
CPU Clock Ratio 37
CPU NorthBridge Freq 37
CPU Host Clock Control 37
CPU Frequency (MHz) 37
PCIE Clock (MHz) 38
HT Link Frequency 38
Set Memory Clock 38
Memory Clock 38
DRAM Configuration 38
2-4 Standard CMOS Features 41
Floppy 3 Mode Support 42
2-5 Advanced BIOS Features 43
Password Check 44
HDD S.M.A.R.T. Capability 44
Away Mode 44
Full Screen LOGO Show 44
Init Display First 44
2-6 Integrated Peripherals 45
2-7 Power Management Setup 48
2-8 PnP/PCI Configurations 50
2-9 PC Health Status 51
2-10 Load Fail-Safe Defaults 53
2-11 Load Optimized Defaults 53
2-13 Save & Exit Setup 55
2-14 Exit Without Saving 55
3-2 Application Software 58
3-3 Technical Manuals 58
3-4 Contact 59
3-5 System 59
3-6 Download Center 60
Chapter 4 Unique Features 61
B. Accessing Xpress Recovery2 62
E. Removing the Backup 63
F. Exiting Xpress Recovery2 63
4-2 BIOS Update Utilities 64
B. Updating the BIOS 65
A. Before You Begin: 67
B. Using @BIOS: 67
C. After Updating the BIOS: 67
4-3 EasyTune 6 68
4-4 Easy Energy Saver 69
B. Total Mode 70
C. Stealth Mode 70
4-5 Q-Share 71
4-6 Time Repair 72
Chapter 5 Appendix 73
A. Installing Windows XP 80
B. Installing Windows Vista 81
A. Configuring Speakers: 84
B. Configuring Sound Effect: 85
S/PDIF in: 86
S/PDIF out: 86
S/PDIF Coaxial Cable 87
S/PDIF Optical Cable 87
* Enabling Stereo Mix 89
A. Recording Sound: 90
5-3 Troubleshooting 91
Appendix- 93 93
5-4 Regulatory Statements 94
Appendix- 97 97
Contact Us 99

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Gigabyte GA-MA790X-UD4 User Manual Page 30

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