Cabling Requirements
10/100Base-TX Ethernet
Appendix B
88
Connector Pin Usage for 100- Mbit/s Twisted-Pair Connector
Use Category 5 unshielded twisted-pair cables that comply with the IEEE 802.3u
100Base-TX standard. Table B-3 shows the pins and signal TX end node.
Cabling
Incorrectly wired or installed cabling is the most common cause of communications
problems for LANs. HP recommends that you work with a qualified cable installer for
assistance in your cabling requirements.
The available HP cables are as follows:
• HP 92268A — 4 meter with attached 8-pin connectors
Table B-4 summarize the cabling requirements for 100Base-T products.
CAUTION The unshielded twisted-pair cables you use with the PCI-X 10/100Base-TX card must
comply with the IEEE 802.3u 100Base-TX standards in order to meet emissions
requirements. These standards support cabling up to 100 meters only.
Cable Lengths
Table B-3 IEEE 802.3u 100Base-TX Standard
Pins
Signal TX
End Node
1
2
TX:1+
TX:1-
3
6
RX:1+
RX:1-
4
5
Unused
Unused
7
8
Unused
Unused
Table B-4 Cable Types and Distances for 100Base-T (Copper)
Port Type Connector
Supported Cable
Types
Maximum Distance
(Spec)
100Base-T RJ45 Type 1 shielded
twisted pair (STP) and
Category 5 (CAT 5)
unshielded
twisted-pair (UTP)
100 Meters (328 Feet)
