Modem); Network); Rj-11 (Modem); Rj-45 (Network) - HP EliteBook 8440W Maintenance And Service Manual

Connector pin assignments
RJ-1 1 (modem)
Pin
1
2
3
4
5
6

RJ-45 (network)

Pin
1
2
3
4
5
6
7
8
8–4
Signal
Unused
Tip
Ring
Unused
Unused
Unused
Signal
Transmit +
Transmit
Receive +
Unused
Unused
Receive -
Unused
Unused
Maintenance and Service Guide