Product specifications

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Table 17-5 lists the pin assignments for the serial connectors. Not all
serial devices use every signal.
Table 17-5 Pin Assignments for Serial Connectors
Pin Signal
1 DTR
2 CTS
3 TxD-
4 GND/Shield
5 RxD-
6 TxD+
7 Not used
8 RxD+
9 Not used