IBM 6862 User Guide - Page 175

Appendix B. Additional Ethernet information This appendix contains connector and cable specifications, diagnostic LED indications, and Ethernet error messages for the Ethernet controller that is included with some models. Connector and Cable Specifications The system board contains an Ethernet controller. The controller has an external RJ-45 connector on the rear of the computer that is used with a Category 3 or Category 5 twisted-pair cable. Through this connector, you can attach an Ethernet network cable to the internal transceiver in your computer. Attention: The 10BASE-T Ethernet and the 100BASE-TX Fast Ethernet cabling in the network must be Category 5 or higher to meet various standards, including electromagnetic compatibility. 10BASE-T or 100 BASE-TX UTP Cable 1 23 Pins 6 RJ-45 Modular Plug Connector The following figure illustrates the wiring in straight-through cables. RJ-45 Modular Connector 10BASE-T / 100 BASE-TX RJ-45 Modular Connector Twisted Signal Pair Name Pin 1 TD+ 1 Signal Pin Name 1 TD+ 1 TD 2 2 TD 2 RD+ 3 3 RD+ 2 RD 6 6 RD 3, 4 (Not used) 4, 5, 7, 8 Relative to the device connected to the adapter 4, 5, 7, 8 (Not used) © Copyright IBM Corp. 1999 157