Gigabyte A520M H User Manual page 18

15) 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.
10
_ _ 3
16) TPM (Trusted Platform Module Header)
You may connect a TPM (Trusted Platform Module) to this header.
_ _B
11
12
S F_
17) CLR_CMOS (Clear CMOS Jumper)
Use this jumper to clear the BIOS configuration and reset the CMOS values to factory defaults. To clear
the CMOS values, use a metal object like a screwdriver to touch the two pins for a few seconds.
B_
B
F_USB3 F_USB30 3
B
S B_
B
_ S
Pin No. Definition
S_
_
1
B
9 1 2
2
3
4
_ U
_
5
B
F_USB3 F
_
S _
Pin No. Definition
1
1
2
2
3
4
5
6
Open: Normal
Short: Clear CMOS Values
• Always turn off your computer before clearing the CMOS values.
• After system restart, go to BIOS Setup to load factory defaults (select Load Optimized Defaults) or
manually configure the BIOS settings (refer to Chapter 2, "BIOS Setup," for BIOS configurations).
B
Pin No. Definition
NDCD- 6 NDSR-
NSIN 7 NRTS-
NSOUT 8 NCTS-
NDTR- 9 NRI-
GND 10 No Pin
Pin No. Definition
7
LAD0 LAD3
8
VCC3 GND
9
LAD1 LFRAME
10
No Pin NC
11
LAD2 SERIRQ
12
LCLK LRESET
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F
_ 0
_ F
_ 0 F
_3 U
S
S