B-1
Catalyst 2940 Switch Hardware Installation Guide
OL-6157-01
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 2940 switches and contains this
information:
• 10/100 Ports, page B-1
• 10/100/1000 Ports, page B-3
• 100BASE-FX Port, page B-4
• SFP Module Slot, page B-4
• Console Port, page B-5
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 label on the switch, as shown in Figure B-1.
Figure B-1 Port Labels Showing Internal Crossovers
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-2 shows the pinout.
1x 2x 3x 4x 5x
10Base-T / 100Base-TX
89869
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