Cross-Over Cable, to connect 2 PC's -  CAT 5 cable
For 10BaseT and 100BaseTX
Each End is different:
One End
RJ45 Pin #
Wire Color
Wire Diagram
Signal
Other End
RJ45 Pin #
1
White/Orange
white/orange
Transmit+
3
2
Orange
orange
Transmit-
6
3
White/Green
white/green
Receive+
1
4
Blue
blue
Unused
4
5
White/Blue
white/blue
Unused
5
6
Green
green
Receive-
2
7
White/Brown
white/brown
Unused
7
8
Brown
brown
Unused
8

rj45 jack pinout  rj45 plug

Straight Thru Cable Here          Wall Jacks Diagram Here

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