MSI Master LS2 User Guide - Page 26

Audio Port Connectors, Serial Port Connector: COM A & COM B

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Hardware Setup Serial Port Connector: COM A & COM B The mainboard offers two 9-pin male DIN connectors as serial port COM A and COM B. The ports are 16550A high speed communication ports that send/receive 16 bytes FIFOs. You can attach a serial mouse or other serial devices directly to them. 1 2 3 4 5 PIN 1 2 3 4 6 7 8 9 5 6 9-Pin Male DIN Connectors 7 8 9 Pin Definition SIGNAL DCD SIN SOUT DTR GND DSR RTS CTS RI DESCRIPTION Data Carry Detect Serial In or Receive Data Serial Out or Transmit Data Data Terminal Ready) Ground Data Set Ready Request To Send Clear To Send Ring Indicate Audio Port Connectors Line Out is a connector for Speakers or Headphones. Line In is used for external CD player, Tape player, or other audio devices. Mic is a connector for microphones. 1/8" Stereo Audio Connectors MIC Line In Line Out 2-11

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2-11
Hardware Setup
Audio Port Connectors
Line Out
is a connector for Speakers or Headphones.
Line In
is used
for external CD player, Tape player, or other audio devices.
Mic
is a connec-
tor for microphones.
1/8” Stereo Audio Connectors
Serial Port Connector: COM A & COM B
The mainboard offers two 9-pin male DIN connectors as serial port COM
A and COM B. The ports are 16550A high speed communication ports that
send/receive 16 bytes FIFOs. You can attach a serial mouse or other serial
devices directly to them.
9-Pin Male DIN Connectors
1
2
3
4
5
6
7
8
9
PIN
SIGNAL
DESCRIPTION
1
DCD
Data Carry Detect
2
SIN
Serial In or Receive Data
3
SOUT
Serial Out or Transmit Data
4
DTR
Data Terminal Ready)
5
GND
Ground
6
DSR
Data Set Ready
7
RTS
Request To Send
8
CTS
Clear To Send
9
RI
Ring Indicate
Pin Definition
Line In
MIC
Line Out