Gigabyte B550M S2H - Page 18

17) CLR_CMOS(ClearCMOSJumper)
Use this jumper to clear the BIOS conguration 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.
• 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 congure the BIOS settings (refer to Chapter 2, "BIOS Setup," for BIOS congurations).
Open: Normal
Short: Clear CMOS Values
16) TPM (Trusted Platform Module Header)
You may connect a TPM (Trusted Platform Module) to this header.
Pin No. Denition Pin No. Denition
1
LAD0
7
LAD3
2
VCC3
8
GND
3
LAD1
9
LFRAME
4
No Pin
10
NC
5
LAD2
11
SERIRQ
6
LCLK
12
LRESET
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.
Pin No. Denition Pin No. Denition
1 NDCD- 6 NDSR-
2 NSIN 7 NRTS-
3 NSOUT 8 NCTS-
4 NDTR- 9 NRI-
5 GND 10 No Pin
1
2
9
10
1
2
11
12
F_USB30
F_U
B_ 
F_  F_ 

_
B
BS_
B
SB_
B
_S

S_
_
B
_U
_
B


 
S  
 
123
 
123
 
123
 
123
1
1
1
1
BSS
S
_S 
SSU
 
1 2 3  
 S3
BSSS

U
 __ 3
F_USB3F
S  _
S  _
S  _
SF


B_
B_
F
_0
S
S
_0F
_F
_
_
__B


U
S  _S
_
SF_
B 
USB0_B
B_
F_USB3

F_USB303

_

_3U
S_
SS_F 
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