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Pin Assignments B-1
Appendix B: Pin Assignments
RJ-45 Port
Hub Cable
Figure B.1
RJ-45 Connector
(on the Hub Side)
RJ-45 station ports (MDI-X) can be attached to any devices that
use a standard network interface (e.g., a workstation or server).
RJ-45 cascade ports (MDI) can be cascaded to a station port on
similar networking devices (e.g., another switch or router). Use
unshielded twisted-pair (UTP) or shielded twisted-pair (STP)
cable for RJ-45 connections: 100W Category 3, 4 or 5 cable for
10 Mbit/s connections or 100W Category 5 cable for 100
Mbit/s connections. Also be sure that the length of any twisted-
pair connection does not exceed 100 meters.
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Table B.1 RJ-45 Pin Assignments
Schematics for both straight and crossover twisted-pair cable
are shown below.
Straight-Through Crossover
(Hub) (Adapter) (Hub) (Hub)
1 1 1
1
2 2 2
2
3 3 3 3
6 6 6 6
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