Cisco Catalyst 3650 - Two Twisted-Pair Cable Pinouts; Identifying a Crossover Cable; Console Port Adapter Pinouts

7-9
Catalyst 3650 Switch Hardware Installation Guide
OL-29734-01
Appendix 7 Connector and Cable Specifications
Cable and Adapter Specifications
Two Twisted-Pair Cable Pinouts
Figure 7-16 Two Twisted-Pair Straight-Through Cable Schematic
Figure 7-17 Two Twisted-Pair Crossover Cable Schematic
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 7-18.)
Figure 7-18 Identifying a Crossover Cable
Console Port Adapter Pinouts
The console port uses an 8-pin RJ-45 connector, which is described in Table 7-2 and Table 7-3. 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
Switch
3 TD+
6 TD–
1 RD+
2 RD–
Router or PC
3 RD+
6 RD–
1 TD+
2 TD–
H5578
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.