Connector Pin Assignments
B-1
Appendix B Connector Pin Assignments
This appendix provides information on the RJ-45 connectors that are used for the Model FE508 and
Model FE516 Fast Ethernet hubs.
RJ-45 Connector
The RJ-45 connector is used to connect stations, hubs, and switches through unshielded twisted-pair
cable and supports 100 Mbps data transmission. The RJ-45 connector accepts two- or four-pair
Category 5 UTP cable. Figure B-1 illustrates the RJ-45 connector used for port connections on hubs.
Table B-1 provides the pin out information for the Normal (MDI-X) RJ-45 connector and the pin out
information for the Uplink (MDI) port (Port 8 on the Model FE508 and Port 16 on the Model FE516)
RJ-45 connector.
Figure B-1. RJ-45 connector
Table B-1. RJ-45 connector pin assignments
Pin
Normal (MDI-X)
Uplink (MDI) *
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
* Applicable to Port 8 on the Model FE508 hub and Port 16 on the Model FE516 hub.
