IEI Integration NANO-945GSE v2.00 - Manual (Page 60)

NANO-945GSE EPIC Motherboard
Page 60
3.3.18 Serial Port Connectors (COM 3 and COM4)
CN Label: COM3 and COM4
CN Type: 10-pin header (2x5)
CN Location: See
7
Figure 3-20
CN Pinouts: See
7
Table 3-21
The 10-pin serial port connector provides a second RS-232 serial communications
channel. The COM serial port connectors can be connected to external RS-232 serial port
devices.
Figure 3-20: COM 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 N/C
Table 3-21: COM Connector Pinouts