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14 Appendix B Cabling Guidelines
Kingston Technology Company KNE24TX/RS User’s Guide - Rev. A01
Appendix B Cabling Guidelines
Cable Type
When connecting network cables, the following table shows appropriate
cabling guidelines for 100BASE-TX Fast Ethernet architecture.
Ethernet Standard: 100BASE-TX
Trunk and Patch Cable
Type:
4-Pair 100Ω UTP CAT 5
(only 2 pairs used)
Max. Cable Length:
Hub to Workstation
Hub to Hub
100M (328ft)
5M (16.4ft)
Modular Plug:
8-Pin RJ-45 CAT 5 only
Patch Panel:
8-Pin RJ-45 CAT 5 only
Network Topology:
Star
Table B-1. Network Cable Guidelines
UTP Cable Wiring
100BASE-TX unshielded twisted-pair cables can be wired as "Straight-
Through" or, in some cases, "Cross-Over" depending on the application. For
workstations connected to a hub, use "Straight-Through' wiring illustrated
below in Table B-2. In some instances (e.g. cascading from one hub to
another), you may use "Cross-Over" wiring illustrated below in Table B-3.
"Straight-Through" Crossover”
Cable Wiring Cable Wiring
1 (TRX +)
2 (TRX -)
3 (RCV +)
6 (RCV -)
4, 5, 7, 8
1 (TRX +)
2 (TRX -)
3 (RCV +)
6 (RCV -)
Not Used
Pin Number Pin Number
1 (TRX +)
2 (TRX -)
3 (RCV +)
6 (RCV -)
4, 5, 7, 8
3 (RCV +)
6 (RCV -)
1 (TRX +)
2 (TRX -)
Not Used
Pin Number Pin Number
Table B-2. Straight-Through Wiring Table B-3. Cross Over Wiring