IEI Integration PCISA-PV-D4251_N4551_D5251 - Manual (Page 45)

PCISA-PV-D4251/N4551/D5251 CPU Card
Page 32
3.2.16 RS-232 Serial Port Connectors (COM1, COM3 and COM4 )
CN Label: COM1, COM3 and COM4
CN Type: 10-pin header (2x5)
CN Location: See Figure 3-17
CN Pinouts: See Table 3-19
The 10-pin serial port connector provides a RS-232 serial communications channel. The
COM1, COM3 and COM4 serial port connectors can be connected to external RS-232
serial port devices.
Figure 3-17: RS-232 Connector Pinout Locations
PIN NO. DESCRIPTION PIN NO. DESCRIPTION
1 Data Carrier Direct (DCD) 2 Data Set Ready (DSR)
3 Receive Data (RXD) 4 Request To Send (RTS)
5 Transmit Data (TXD) 6 Clear To Send (CTS)
7 Data Terminal Ready (DTR) 8 Ring Indicator (RI)
9 Ground (GND) 10 Ground (GND)
Table 3-19: RS-232 Connector Pinouts