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8 pin RJ45 (8P8C) male connector layout
8 pin RJ45 (8P8C) male connector
at the network interface card 1
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

This is an old version of Ethernet RJ45 connection wiring. 

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. 

How to wire an Ethernet  network RJ45 connection cable

8 pin RJ45 (8P8C) male connector layout
8 pin RJ45 (8P8C) male connector
at the network interface card 2
Pinout status: +6 -2
According to 8 reports in our database (6 positive and 2 negative) the Ethernet 10Base-T crossover cable pinout should be correct.

Is this pinout
NO DIY devices
Source(s) of this and additional information: Hardware Book, Jason D. Pero , Oscar Fernandez Sierra, Jeffrey R. Broido, Patrick Smart
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