Accton Technology FAST ETHERHUB-12S manual Appendix B, RJ-45 Port

Appendix B:

Port and Cable Assignments

RJ-45 Port

Figure B-1 RJ-45 Connector (on the Hub Side)

Pin

1

2

3

6

4,5,7,8

MDI-X Assignment (Station Port 1 ~ 12)

Input Receive Data +

Input Receive Data -

Output Transmit Data +

Output Transmit Data -

Not Used

MDI Assignment (Cascade Port 12)

Output Transmit Data +

Output Transmit Data -

Input Receive Data +

Input Receive Data -

Not Used

Table B-1 RJ-45 Pin Assignments

Schematics for both straight and crossover twisted-pair cable are shown below.

	Straight-Through							Crossover
	(Hub)			(Adapter)		(Hub)			(Hub)
1	IRD+		1		OTD+	1	IRD+		1	IRD+
2	IRD-			2	OTD-	2	IRD-		2	IRD-
3	OTD+		3		IRD+	3	OTD+		3	OTD+
6	OTD-	6			IRD-	6	OTD-		6	OTD-

Cable and Port Assignments B-1