Ethernet Cable Pinouts and Information

There are two types of LAN cables – Crossover and straight through. Most modern communications equipment can auto sense which type you are using, but some still need the correct cable. The following are the pin-outs for the RJ45 connectors so you can check which one you have or make up your own. It doesn’t matter if you are making up some Cat5e, Cat6 and Cat7 cables the pin-out is always the same for Ethernet cables


Straight Through LAN Cable Pinout

  • T-568A – Most commonly used in the US and Australia
  • T-568B – Britain (UK) and Europe
RJ45 Pinout for Ethernet
Ethernet Cable Pinout T568A and T568B
  • Pin 1 → White and Green (Transmit +) wire
  • Pin 2 → Green (Transmit -) wire
  • Pin 3 → White and Orange (Receive +) wire
  • Pin 4 → Blue wire
  • Pin 5 → White and Blue wire
  • Pin 6 → Orange (Receive -) wire
  • Pin 7 → White and Brown wire
  • Pin 8 → Brown wire
Straight LAN Cable Pinout
LAN Cable Pinout

Remember that Pin 1 is on the left hand side with the clip at the rear.


Cross-Over Ethernet Cable

cross-over RJ45 cable
Cross-over Ethernet Cable Pinout
  • Pin 1  ← White and Green wire → Pin 3
  • Pin 2  ← Green wire → Pin 6
  • Pin 3  ← White and Orange wire  → Pin 1
  • Pin 4  ← Blue wire  → Pin 1
  • Pin 5  ← White and blue wire → Pin 5
  • Pin 6  ← Orange wire → Pin 2
  • Pin 7  ← White and Brown wire → Pin 7
  • Pin 8  ← Brown wire → Pin 8
cross-over LAN Cable RJ45 pins
Cross Over LAN Cable Pinout

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