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RJ-45 Connector
The RJ-45 connector (shown in the illustration with an RJ-45 plug) is used to connect
workstations, hubs, and switches through unshielded twisted pair cable. The RJ-45 connector
accepts four-pair Category 3 or Category 5 UTP cable. Only two pairs are used for 10BASE-T
wiring.
Normal Assignment:
Ports 1–15 on the
Model EN516 hub
RJ-45 Connector
Ports 1–23 on the
Model EN524 hub
Pin Assignment
1
Input Receive Data +
2
Input Receive Data -
3
Output Transmit Data +
6
Output Transmit Data -
4, 5, 7, 8
Not used
AUI Connector
The AUI connector for the hub connects the hub through an external transceiver to other devices.
An inter-repeater fiber link using a 10BASE-F transceiver is an example of such an application.
AUI Connector Pin Assignment
1, 4, 11, 14, 15
2
3
5
6
7, 8
9
10
12
13
Model EN516/EN524 Ethernet Hub Installation Guide
12345678
8
Uplink Assignment:
Port 16 on the
Model EN516 hub
Port 24 on the
Model EN524 hub
Output Transmit Data +
Output Transmit Data -
Input Receive Data +
Input Receive Data -
Not used
AUI connector
1
8
15
9
8148EA
Signal
Ground
CI-A
DO-A
DI-A
+ 12 V DC return
Not used
CI-B
DO-B
DI-B
+ 12 V DC (500 mA maximum)
1
711EA
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