Pin outs for DB25
Connector on PC is male
1 - Protective Ground
2 - Transmit Data
3 - Receive Data
4 - Request to Send
5 - Clear to Send
6 - Data Set Ready
7 - Signal Ground
8 - Data Carrier Detect
20 - Data Terminal Ready
22 - Ring Indicator
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Pin outs for DB9
Connector on PC is female
1 - Data Carrier Detect
2 - Receive Data
3 - Transmit Data
4 - Data Terminal Ready
5 - Signal Ground
6 - Data Set Ready
7 - Request to Send
8 - Clear to Send
9 - Ring Indicator
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