Cabling and Technology Information

Twisted-Pair Cable/Connector Pin-Outs

Straight-through Twisted-Pair Cable for

10 Mbps or 100 Mbps Network Connections

Because of the Auto-MDIX operation of the 10/100 ports on the switch, for all network connections, to PCs, servers or other end nodes, or to hubs or other switches, you can use straight-through cables.

If any of these ports are given a fixed configuration, for example 100 Mbps/ Full Duplex, the ports operate as MDI-X ports, and straight-through cables must be then used for connections to PC NICs and other MDI ports.

Cable Diagram

Cabling and Technology

Information

 

 

N o t e

 

Pins 1 and 2 on connector “A” must be wired as a twisted pair to pins 1 and 2

 

 

on connector “B”.

 

 

 

 

 

Pins 3 and 6 on connector “A” must be wired as a twisted pair to pins 3 and 6

 

 

on connector “B”.

 

 

 

 

 

Pins 4, 5, 7, and 8 are not used in this application, although they may be wired

 

 

in the cable.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

.

 

Pin Assignments

 

 

 

 

 

 

 

 

 

 

Switch End (MDI-X)

Computer, Transceiver, or

 

 

 

 

 

 

 

Other End

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Signal

Pins

Pins

Signal

 

 

 

 

 

 

 

 

 

 

 

 

receive +

1

 

 

 

1

transmit +

 

 

 

 

 

 

receive -

2

 

 

 

2

transmit -

 

 

transmit +

3

 

 

 

3

receive +

 

 

 

 

 

 

 

transmit -

6

 

 

 

6

receive -

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B-6