User`s manual

CyberResearch
®
Motherboards MXGD Series
CyberResearch, Inc. 63
25 Business Park Drive P: [phone]; F: [phone]
Branford, CT USA www.cyberresearch.com
4.2.14 Serial Port Connectors (RS-232)
CN Label: COM3, COM4, COM5 and COM6
CN Type:
10-pin header (2x5)
CN Location: See Figure 4-15
CN Pinouts: See Table 4-17
The four 10-pin serial port connectors provide four additional RS-232 serial
communications channels. The four internal RS-232 serial port connectors can be
connected to external RS-232 serial port devices.
Figure 4-15: RS-232 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 Ground (GND)
Table 4-17: RS-232 COM Connector Pinouts