Quick Start Manual
Installation Guide for the Model EN516 Ethernet Hub
C-2 Connector Pin Assignments
Table C-1 lists the pin assignments for the RJ-45 connector.
AUI Connector
The AUI connector for the Model EN516 hub connects the hub through an external 
transceiver to other devices. An inter-repeater fiber link for 10BASE-F or FOIRL are 
examples of such applications. Figure C-2 illustrates the AUI connector pin assignments.
Figure C-2. AUI connector pin assignments
Table C-1. RJ-45 connector pin assignments
Pin
Normal assignment
on ports 1 to 15
Uplink assignment 
on port 16
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
15
9
7176
1
8










