Pin Assignments
Switch End (MDI-X) Hub or Switch Port, or Other MDI-X Port End
Signal Pins Pins Signal
receive +
receive -
transmit +
transmit -
transmit -
transmit +
receive -
receive +
Straight-Through Twisted-Pair Cable for 1000 Mbps Network Connections
1000BASE-T connections require that all four pairs of wires be connected.
Cable Diagram
Connector A Connector B
White/Orange
1000Base-T
Straight-through cable
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
Orange/White
White/green
green/White
blue/white
white/blue
white/brown
brown/white
NOTE:
• Pins 1 and 2 on connector “A” must be wired as a twisted pair to pins 1 and 2 on connector “B”.
• Pins 3 and 6 on connector “A” must be wired as a twisted pair to pins 3 and 6 on connector “B”.
• Pins 4 and 5 on connector “A” must be wired as a twisted pair to pins 4 and 5 on connector “B”.
• Pins 7 and 8 on connector “A” must be wired as a twisted pair to pins 7 and 8 on connector “B”.
Pin Assignments
For 1000BASE-T operation, all four pairs of wires are used for both transmit and receive.
42 Pin Assignments
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