Pinouts of Connectors

Ethernet 10/100Base-T Crossover cable pinout

layout
schematic diagram
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This cable can be used to cascade hubs, or for connecting two Ethernet stations back-to-back without a hub. It works with both 10Base-T and 100Base-TX

8 pin RJ45 MALE connector pin-out & layout
8 pin RJ45 MALE connector  to the network interface card 1
Name NIC1 NIC2 Name
TX+ 1 3 RX+
TX- 2 6 RX-
RX+ 3 1 TX+
RX- 6 2 TX-

Note 1: It´s important that each pair is kept as a pair. TX+ & TX- must be in the pair, and RX+ & RX- must together in another pair. (Just as the table above shows). Note 2: You could also connect 4-4, 5-5, 7-7, 8-8.

8 pin RJ45 MALE connector pin-outs & layouts
8 pin RJ45 MALE connector  to the network interface card 2
Pinouts.ru > Pinouts and schemes of cables for local networks >  Pinout of Ethernet 10/100Base-T Crossover cable and layout of 8 pin RJ45 MALE connector and 8 pin RJ45 MALE connector

Source(s): Hardware Book, Jason D. Pero , Oscar Fernandez Sierra, Jeffrey R. Broido, Patrick Smart
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