IntelliStation E Pro User Guide Professional ... - FTP Directory Listing

Appendix B. Ethernet Connector, 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.
Ethernet Connector
1 2 3
Pins 6
10BASE-T or 100 BASE-TX
UTP Cable
RJ-45 Modular Plug Connector
The following figure illustrates the wiring in straight-through cables.
RJ-45 Modular Connector
Twisted
Pair
1
1
2
2
3, 4
Signal
Name
TD+
TD
RD+
RD
(Not used)
Pin
1
2
3
6
4, 5, 7, 8
10BASE-T / 100 BASE-TX
Relative to the device connected to the adapter
RJ-45 Modular Connector
Pin
1
2
3
6
4, 5, 7, 8
Signal
Name
TD+
TD
RD+
RD
(Not used)
© Copyright IBM Corp. 1998 145