MSI 745 ULTRA User Guide - Page 27

Serial Port Connector: COM A & COM B, Joystick/Midi Connectors, Audio Port Connectors

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Hardware Setup Serial Port Connector: COM A & COM B The mainboard offers two 9-pin male DIN connectors as serial ports 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 Joystick/Midi Connectors You can connect a joystick or game pad to this connector. 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 Line Out Line In MIC 2-9

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Hardware Setup
2-9
Serial Port Connector: COM A & COM B
The mainboard offers two 9-pin male DIN connectors as serial ports
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
Joystick/Midi Connectors
You can connect a joystick or game pad to this connector.
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
1
2
3
4
5
6
7
8
9
Line Out
Line In
MIC
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