Compaq HB1004 manual Twisted Pair Cable, Table B-2 RJ-45 Port Pin Assignments

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B-3

Table B-2

RJ-45 Port Pin Assignments

Pin	Assignment	Assignment
	(Hub Ports 1 – 4)	(MDI/MDI-X Port, other Device)
1	Input Receive Data +	Output Transmit Data +
2	Input Receive Data -	Output Transmit Data -
3	Output Transmit Data +	Input Receive Data +
6	Output Transmit Data -	Input Receive Data -
4, 5, 7, 8	Not Used	Not Used

Twisted Pair Cable

Figure B-1 shows the wiring for Straight-Through and Crossover twisted-pair cable.

S tra ig ht-T hro u gh

	(Hub)	(Adapter)
1	IRD+	1	O TD+
2	IRD -	2	O TD -
3	O TD+	3	IRD+
6	O TD -	6	IRD -

C ro ssove r

	(Hub)	(Hub)
1	IRD+	1	IRD+
2	IRD -	2	IRD -
3	O TD+	3	O TD+
6	O TD -	6	O TD -

Figure B-1Straight-through and Crossover UTP cables

Compaq HB1004 10Base-T Ethernet Hub