B-1
Catalyst 2950 Desktop Switch Hardware Installation Guide
78-11157-03
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 and
contains this information:
• 10/100 Ports, page B-1
• 10/100/1000 Ports, page B-3
• 100BASE-FX and 1000BASE-SX Ports, page B-4
• GigaStack GBIC Module Ports, page B-6
• Console Port, page B-6
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.
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