B-5
Switch Ports and Network Cables
Twisted-Pair Cable/Connector Pin-Outs
Sw
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P
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Net
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Ca
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Straight-Through Twisted-Pair Cable for
10 Mbps or 100 Mbps Network Connections
Because of the Auto MDI/MDI-X 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
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, Module, or Other
End
Signal
Pins
Pins
Signal
r
receive -
tr
transmit -
1
2
3
6
1
2
3
6
tr
transmit -
r
receive -
