10/100 Dual-speed Fast Ethernet PCI Adapters Installation Guide KF223TX/KF230TX
A2. RJ-45 Connector & Cables
Figure A-1 shows the pin assignments of the RJ-45 connector for
10BASE-T and 100BASE-TX network. The pin assignments are iden-
tical for 10BASE-T and 100BASE-TX, using Category 5 UTP cable.
Pin Signal Name
1 Transmit +
2 Transmit -
3 Receive +
4 NC (no connection)
5 NC (no connection)
6 Receive -
7 NC (no connection)
8 NC (no connection)
Figure A-1 RJ-45 Connector Pin Assignments
Cabling Requirements:
10Mbps 10BASE-T Ethernet Category 3, 4, or 5 UTP Cable
The maximum distance is 100 meters.
100 Mbps 100BASE-TX Ethernet Category 5 UTP Cable
The maximum distance is 100 meters.
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