Cisco Systems 3750-X, 3560-X Identifying a Crossover Cable, Console Port Adapter Pinouts, Device

Appendix B Connector and Cable Specifications

Cable and Adapter Specifications

Figure B-13

Switch

3TD+ 6 TD–

1RD+ 2 RD–

Two Twisted-Pair Crossover Cable Schematic

Switch

3TD+

6TD–

1 RD+	H5579
2 RD–

Identifying a Crossover Cable

To identify a crossover 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-14.)

Figure B-14 Identifying a Crossover Cable

Pin 1 on one connector and pin 8 on the other connector should be the same color.

Pin 1 Pin 8

H10632

Console Port Adapter Pinouts

The console port uses an 8-pin RJ-45 connector, which is described in Table B-2and Table B-3. If you did not order a console cable, you need to provide an RJ-45-to-DB-9 adapter cable to connect the switch console port to a PC console port. You need to provide an RF-45-to-DB-25 female DTE adapter if you want to connect the switch console port to a terminal. You can order a kit with an adapter (part number ACS-DSBUASYN=). For console port and adapter pinout information, see Table B-2and Table B-3.

Table B-2lists the pinouts for the console port, the RF-45-to-DB-9 adapter cable, and the console device.

Table B-2 Console Port Signaling Using a DB-9 Adapter

		Switch Console	RJ-45-to-DB-9	Console
		Port (DTE)	Terminal Adapter	Device
		Signal	DB-9 Pin	Signal
		RTS	8	CTS
		DTR	6	DSR
		TxD	2	RxD
	Catalyst 3750-X and 3560-X Switch Hardware Installation Guide
B-8					OL-19593-01