B-1
Catalyst 2950 Desktop Switch Hardware Installation Guide
78-11157-02
APPENDIX
B
Connectors and Cables
This appendix describes the connectors, cables, and adapters that you use to
connect the switch to other devices.
Connector Specifications
These sections describe the connectors used with the Catalyst 2950 switches.
10/100 Ports
The 10/100 Ethernet ports use standard RJ-45 connectors and Ethernet pinouts
with internal crossovers, as shown by an X in the port name. These ports have the
transmit (TD) and receive (RD) signals internally crossed so that a twisted-pair
straight-through cable and adapter can be attached to the port. Figure B-1 shows
the pinout.
When connecting 10/100 ports to compatible devices, such as servers,
workstations, and routers, you can use a two or four twisted-pair, straight-through
cable wired for 10BASE-T and 100BASE-TX. Figure B-6 shows the two
twisted-pair, straight-through cable schematics. Figure B-8 shows the four
twisted-pair, straight-through cable schematics.
When connecting the ports to other devices, such as switches or repeaters, you can
use a two or four twisted-pair, crossover cable. Figure B-7 shows the two
twisted-pair, crossover cable schematics. Figure B-9 shows the four twisted-pair,
crossover cable schematics.
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