Cisco WS-C2950-12 Hardware Installation Manual page 108

Connector Specifications
When connecting 10/100 ports to other 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.
straight-through cable schematics.
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.
twisted-pair, crossover cable schematics.
crossover cable schematics.
You can use Category 3, 4, or 5 cabling when connecting to 10BASE-T devices.
You must use Category 5 cabling when connecting to 100BASE-TX devices.
Note Use a straight-through cable to connect two ports only when one port is
designated with an X. Use a crossover cable to connect two ports when both ports
are designated with an X or when both ports do not have an X.
Figure B-1
Catalyst 2950 Desktop Switch Hardware Installation Guide
B-2
10/100 RJ-45 Pinouts
Pin Label
1 RD+
2 RD-
3 TD+
4 NC
5 NC
6 TD-
7 NC
8 NC
Appendix B
Figure B-6 shows the two twisted-pair,
Figure B-8 shows the four twisted-pair,
Figure B-7
Figure B-9 shows the four twisted-pair,
Connectors and Cables
shows the two
1 2 3 4 5 6 7 8
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