Cisco Catalyst 4500 Series

Not
Connected
2 7 6 DSR
TxD 3 6 2 RxD
GND 4 5 5 GND
GND 5 4 5 GND
RxD 6 3 3 TxD
Not
Connected
7 2 4 DTR
CTS 8 1 7 RTS
Connecting to a Terminal
Use the thin, flat RJ-45-to-RJ-45 rollover cable and RJ-45-to-DB-25 female DTE adapter to connect the
console port to a terminal. Table A-2 lists the pinouts for the console port, the RJ-45-to-RJ-45 rollover
cable, and the RJ-45-to-DB-25 female DTE adapter.
Note: The RJ-45-to-DB-25 female DTE adapter is not supplied with the switch. You may order a kit
(part number ACS-DSBUASYN=) containing this adapter from Cisco.
Table A-2: Console Port Signaling and Cabling Using a DB-25 Adapter
Console
Port
(DTE)
RJ-45-to-RJ-45
Rollover Cable
RJ-45-to-DB-25
Terminal
Adapter
Console
Device
Signal
RJ-45
Pin
RJ-45
Pin
DB-25 Pin Signal
RTS 1 8 5 CTS
Not
Connected
2 7 6 DSR
TxD 3 6 3 RxD
GND 4 5 7 GND
GND 5 4 7 GND
RxD 6 3 2 TxD
Not
Connected
7 2 20 DTR
CTS 8 1 4 RTS
Cisco - Connecting a Terminal to the Console Port on Catalyst Switches
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