MSI KT4V User Guide - Page 32

Serial Port Connectors: COM A & COM B, RJ-45 LAN Jack Optional, A & COM B.

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MS-6712 ATX Mainboard Serial Port Connectors: COM A & COM B The mainboard offers two 9-pin male DIN connectors as serial port COM A & 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 the connectors. 1 2 3 4 5 PIN 1 2 3 4 6 7 8 9 5 9-Pin Male DIN Connector 6 7 8 9 Pin Definition SIGNAL DESCRIPTION DCD SIN SOUT DTR GND DSR RTS CTS RI 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 RJ-45 LAN Jack (Optional) The mainboard provides a RJ-45 connector that allows your computer to be connected to a network environment. Activity Indicators LAN Jack (RJ-45) Pin Signal 1 TDP 2 TDN 3 RDP 4 NC 5 NC 6 RDN 7 NC 8 NC Description Transmit differential pair Transmit differential pair Receive differential pair Not used Not used Receive differential pair Not used Not used 2-14

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2-14
MS-6712 ATX Mainboard
Serial Port Connectors: COM A & COM B
The mainboard offers two 9-pin male DIN connectors as serial port COM
A & 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 the connectors.
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
9-Pin Male DIN Connector
1
2
3
4
5
6
7
8
9
RJ-45 LAN Jack (Optional)
The mainboard provides a RJ-45 connector that allows your computer
to be connected to a network environment.
LAN Jack
(RJ-45)
Activity
Indicators
Pin
Signal
Description
1
TDP
Transmit differential pair
2
TDN
Transmit differential pair
3
RDP
Receive differential pair
4
NC
Not used
5
NC
Not used
6
RDN
Receive differential pair
7
NC
Not used
8
NC
Not used