Hub’s RJ- 45 Pin Assignments
Pin
Station Ports 1-8
Uplink Port
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
Schematics for both straight and crossover twisted-pair cable
are shown below. (Note that crossover cable is only required if
you cascade hubs via the RJ-45 station ports; i.e.
Straight- Through Crossover
(Hub) (Adapter) (Hub) (Hub)
1 IRD+ 1 OTD+ 1 IRD+ 3 OTD+
2 IRD- 2 OTD- 2 IRD- 6 OTD-
3 OTD+ 3 IRD+ 3 OTD+ 1 IRD+
6 OTD- 6 IRD- 6 OTD- 2 IRD-
