RJ45 Cat 5 cable pin-outs

Ethernet RJ45 Socket 10baseT Colour Code

Pin No Description Colour
1_____TX +_______Orange/White
2_____TX -_______Orange
3_____RX +_______Green/White
4________________Blue
5________________Blue/White
6_____RX -_______Green
7________________Brown/White
8________________Brown
_________________________________

 

RJ45 Cross Over Cable 10baseT

RJ45 Male RJ45 Male
1__________3
2__________6
3__________1
6__________2
______________________________________

RJ45 100base-T4 Crossover male to male

Name______Pin__Pin__Name
TX_D1+____1____3____RX_D2+
TX_D1-____2____6____RX_D2-
RX_D2+____3____1____TX_D1+
RX_D2-____6____2____TX_D1-
BI_D3+____4____7____BI_D4+
BI_D3-____5____8____BI_D4-
BI_D4+____7____4____BI_D3+
BI_D4-____8____5____BI_D3

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 etc. (Just as
the table above shows).

Certain staff carry current National Security ClearancesNational Security Clearances  for works on government contracts.

If you require this level of assurance, please ask for staff with these credentuals, we are happy to help.