Connector pin assignments
Maintenance and Service Guide 9–5
RJ-11 (modem, select models only)RJ-45 (network)
Pin Signal
1Unused
2Tip
3Ring
4Unused
5Unused
6Unused
Pin Signal
1Transmit +
2Transmit -
3Receive +
4Unused
5Unused
6Receive -
7Unused
8Unused