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Appendix A Pin Assignments 13
KNE24TX/RS User’s Guide - Rev. A01 Kingston Technology Company
Appendix A Pin Assignments
UTP Port Pin Assignments
The UTP ports use RJ-45 Unshielded Twisted Pair (UTP) cabling. Connector
pin numbers and pin wiring assignments are listed below in Figure A-1.
Twisted-Pair cables can be wired with either straight-through or crossover pin
assignments. Both wiring schemes are mentioned in "Appendix B Cabling
Guidelines" for reference in creating a twisted-pair cable.
Fig. A-1 RJ-45 Connector Pin Numbers
Pin Number MDI-X MDI
1 Receive Data + Transmit Data +
2 Receive Data - Transmit Data -
3 Transmit Data + Receive Data +
4,5 Not Used Not Used
6 Transmit Data - Receive Data -
7,8 Not Used Not Used
Table A-1 UTP Pin Assignments
24
5678 9101112
17 18 19 20
1234
13 14 15 16 21 22 23 24
Class
II
Repeater
100BASE-TX
PWR
COLL
FX
FX/ON
KNE24TX/RS
1234
13141516
5678
17181920
9101112
21222324
UTIL%
502512160
Link / Act / Partition
Stackable 100BASE-TX
Fast Ethernet Hub
1 2 3 4 5 6 7 8
Modular
Connector
The UTP port labeled 24= is a standard straight-through UTP port.
All other UTP ports are configured as MDI-X, or internally crossed.
By default, all repeating and switched UTP ports are generally
configured as MDI-X, unless otherwise specified. See Notes on MDI
and MDI-X for more details.