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A-1
Cisco Catalyst 4900M Switch In stallation Guide
78-18350-02
APPENDIX
A
Specifications
Revised: January 4, 2012
This appendix provides cable and power supply technical specifications for the Catalyst 4900M
switches.
Console Port
The console port is an RJ-45 receptacle. The Request to Send (RTS) signal tracks the state of the Clear
to Send (CTS) input. Table A-1 lists the console port pinouts.
Note A console cable is not provided in the accessory kit. It can be ordered as an option.
Ta b le A-1 Console Port Pinouts
Pin Signal Direction Description
1 RTS output request to send
2 DTR output data terminal ready
3 TXD output transmit data
4 GND
5 GND
6 RXD input receive data
7 DSR input data set ready
8 CTS input clear to send