Instruction manual

2-10
MS-7222 Micro-ATX Mainboard
Serial Port Connector
The mainboard offers one 9-pin male DIN connector as the serial port. The port
is a 16550A high speed communication port that sends/receives 16 bytes FIFOs. You
can attach a serial mouse or other serial devices directly to the connector.
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
LAN (RJ-45) Jack (optional)
The mainboard provides 1 standard RJ-45 jack for connection to single Local
Area Network (LAN). This LAN enables data to be transferred at 1000(8110SB), 100
or 10Mbps. You can connect a network cable to it.
Pin Definition
PIN SIGNAL DESCRIPTION
1 D0P Differential Pair 0+
2 D0N Differential Pair 0-
3 D1P Differential Pair 1+
4 D2P Differential Pair 2+
5 D2N Differential Pair 2-
6 D1N Differential Pair 1-
7 D3P Differential Pair 3+
8 D3N Differential Pair 3-
RJ-45 LAN Jack
LED Color LED State Condition
Off LAN link is not established.
Left Orange On (steady state) LAN link is established.
On (brighter & pulsing) The computer is communicating with another
computer on the LAN.
Green Off 10 Mbit/sec data rate is selected.
Right On 100 Mbit/sec data rate is selected.
Orange On 1000 Mbit/sec data rate is selected.