# Ethernet 10/100Base-T

Same connector and pinout for both 10Base-T and 100Base-TX.

(at the network interface cards/hubs)
(at the cables)

RJ45 FEMALE CONNECTOR at the network interface cards/hubs.
RJ45 MALE CONNECTOR at the cables.

Pin | Name | Description
--- | --- | ---
1 | TX+ | Transmit Data+
2 | TX- | Transmit Data-
3 | RX+ | Receive Data+
4 | n/c | Not connected
5 | n/c | Not connected
6 | RX- | Receive Data-
7 | n/c | Not connected
8 | n/c | Not connected

Note: TX & RX are swapped on Hub's.

Contributor: Joakim Ögren, Jeffrey R. Broido

Source:
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Copyright © The Hardware Book Team 1996-2001.
May be copied and redistributed, partially or in whole, as appropriate.
Document last modified: 2001-06-07