HP Color LaserJet 4500 RJ-45 (10Base- T or 10/100Base-TX) connection HP Color LaserJet 4550 RJ-45 (10Base- T or 10/100Base-TX) connection 66 Installation and configuration C7085-90921 Plug the connector of your unshielded twisted-pair cable into the RJ-45 port. The other end of the cable should be attached to the network. Note The HP JetDirect Print server supports RJ-45 connection to 10Base-T or 10/100Base-TX and Fast Infrared (FIR) and parallel ports.