B-6
Catalyst 2350 Switch Hardware Installation Guide
OL18479-01
Appendix B Connector and Cable Specifications
Cable and Adapter Specifications
Two Twisted-Pair Cable Pinouts
Figure B-10
Two Twisted-Pair Straight-Through Cable Schematic
Figure B-11
Two Twisted-Pair Crossover Cable Schematic
Identifying a Crossover Cable
To identify a crossover cable, compare the two modular ends of the cable. Hold the cable ends
side-by-side, with the tab at the back. The wire connected to the pin on the outside of the left plug should
be the same color as the wire connected to the pin on the outside of the right plug. (See
.)
Figure B-12
Identifying a Crossover Cable
S
witch
3 TD+
6 TD–
1 RD+
2 RD–
Router or PC
3 RD+
6 RD–
1 TD+
2 TD–
H5578
S
witch
3 TD+
6 TD–
1 RD+
2 RD–
S
witch
3 TD+
6 TD–
1 RD+
2 RD–
H5579
Pin 1
H10632
Pin 8
Pin 1 on one connector and
pin 8 on the other connector
should be the same color.