Ethernet RJ-45 Twisted Pair connector wiring



Straight thru cable (Both Ends)
Pinout Color
Pin 1 (TD+) White/orange
Pin 2 (TD-) Orange
Pin 3 (RD+) White/green
Pin 4 ---- Blue
Pin 5 ---- White/blue
Pin 6 (RD-) Green
Pin 7 ---- White/brown
Pin 8 ---- Brown

Cross-over cable
Pinout Color Pinout
Pin 1 (TD+) White/orange Pin 3 (RD+)
Pin 2 (TD-) Orange Pin 6 (RD-)
Pin 3 (RD+) White/green Pin 1 (TD+)
Pin 4 ---- Blue Pin 4 ----
Pin 5 ---- White/blue Pin 5 ----
Pin 6 (RD-) Green Pin 2 (TD-)
Pin 7 ---- White/brown Pin 7 ----
Pin 8 ---- Brown Pin 8 ----

In both of the charts above the pin numbers refer to looking at the RJ-45 connector with the flat side up and the clip pointing down.