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B-6
Catalyst 2960-S Switch Hardware Installation Guide
OL-19732-04
Appendix B Connector and Cable Specifications
Cables and Adapters
Figure B-9 Two Twisted-Pair Crossover Cable Schematic
Figure B-10 Identifying a Crossover Cable
Console Port Adapter Pinouts
The RS-232 console port uses an 8-pin RJ-45 connector. Use an RJ-45-to-DB-9 adapter cable to connect
the switch console port to a console PC. You need to provide a RJ-45-to-DB-25 female DTE adapter to
connect the switch console port to a terminal. You can order the kit (part number ACS-DSBUASYN=)
from Cisco.
Switch
3 TD+
6 TD–
1 RD+
2 RD–
Switch
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.
Ta b l e B-2 Console Port Signaling with a DB-9 Adapter
Switch Console
Port (DTE)
RJ-45-to-DB-9
Terminal Adapter
Console
Device
Signal DB-9 Pin Signal
RTS 8 CTS
DTR 6 DSR
TxD 2 RxD
GND 5 GND
GND 5 GND
RxD 3 TxD
DSR 4 DTR
CTS 7 RTS