Serial Port Connector: Com1 ~ Com4 - MSI MS-98F3 User Manual

Serial Port Connector: COM1 ~ COM4

This connector is a 16550A high speed communications port that sends/receives
16 bytes FIFOs. You can attach a serial device to it. COM1 supports RS-232/
422/ 485. COM2~4 support RS-232.
COM1
h
RS-232
RS-422
RS-485
COM2, COM3, COM4
h
RS-232
PIN SIGNAL DESCRIPTION
1 NDCD Data Carrier Detect
2 NSIN Signal In
3 NSOUT Signal Out
4 NDTR Data Terminal Ready
5 GND
Signal Ground
6 NDSR Data Set Ready
7 NRTS Request To Send
8 NCTS Clear To Send
9 VCC 5V or 12V selected by jumper
10 NC No Connection
PIN SIGNAL DESCRIPTION
1 422 TXD- Transmit Data, Negative
2 422 RXD+ Receive Data, Positive
3 422 TXD+ Transmit Data, Positive
4 422 RXD-
Receive Data, Negative
5 GND Signal Ground
6 NC No Connection
7 NC No Connection
8 NC No Connection
9 NC No Connection
10 NC No Connection
PIN SIGNAL DESCRIPTION
1 485 TXD- Transmit Data, Negative
2 NC No Connection
3 485 TXD+ Transmit Data, Positive
4 NC No Connection
5 GND Signal Ground
6 NC No Connection
7 NC No Connection
8 NC No Connection
9 NC No Connection
10 NC No Connection
PIN SIGNAL DESCRIPTION
1 NDCD Data Carrier Detect
2 NSIN Signal In
3 NSOUT Signal Out
4 NDTR Data Terminal Ready
5 GND Signal Ground
6 NDSR Data Set Ready
7 NRTS Request To Send
8 NCTS Clear To Send
9 VCC 5V or 12V selected by jumper
10 NC No Connection
MS-98F3
2-9