Appendix B Connectors and Cables
Connector Specifications
B-2
Catalyst 2950 Desktop Switch Hardware Installation Guide
78-11157-02
You can use Category 3, 4, or 5 cabling when connecting to
10BASE-T-compatible devices. You must use Category 5 cabling when
connecting to 100BASE-TX-compatible 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
10/100 RJ-45 Pinouts
100BASE-FX Ports
The 100BASE-FX ports use MT-RJ connectors, shown in
. The
100BASE-FX ports use 50/125- or 62.5/125-micron multimode fiber-optic
cabling.
You can connect a 100BASE-FX port to an SC or ST port on a target device by
using one of the MT-RJ fiber-optic patch cables listed in
. Use the Cisco
part numbers in
to order the patch cables that you need.
H5318
2 3
1
4 5 6 7 8
Pin
Label
1
2
3
4
5
6
7
8
RD+
RD-
TD+
NC
NC
TD-
NC
NC