Table of Contents
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22
Connecting Optional Devices
Refer to the following for information on connecting the motherboard's optional
devices:
COM: Onboard serial port header
Connect a serial port extension bracket to this header to add a second serial port to
your system.
Pin
Signal Name
1
DCDB
2
SINB
3
SOUTB
4
DTRB
5
GND
6
DSRB
7
RTSB
8
CTSB
9
RI
10
Key
Function
Data Carrier Detect
Serial Input
UART B Serial Output
UART B Data Terminal Ready
Ground
Data Set Ready
RART B Request to Send
Clear to Send
Ring Indicator
No pin
Installing the Motherboard
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