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6-10 VersaMax Serial to Ethernet Adapter User's Manual – July 2000 GFK-1852
6
Serial Port Connectors
IBM-AT Style Personal Computer Serial Port Connector
P
in 1
IBM-AT D-Sub,
Male, 9-Pin
P
in 6
E
xternal View
Pin No. Signal Description
1 DCD Data Carrier Detect
2 RD Receive Data
3 TD Transmit Data
4 DTR Data Terminal Ready
5 GND Signal Ground
6 NC No Connection
7 RTS Request to Send
8 CTS Clear to Send
9 NC No Connection
Figure 6-15. IBM-AT 9-Pin Serial Port Connector