HP ProBook 450 G1 Notebook PC - Manual (Page 28)

To connect the network cable:
1. Plug the network cable into the network jack (1) on the computer.
2. Plug the other end of the cable into a network wall jack (2) or a router (not illustrated).
WARNING! To reduce the risk of electric shock, fire, or damage to the equipment, do not plug
a modem or telephone cable into the RJ-45 (network) jack.
18 Chapter 3 Networking