B-1
Cisco ME 2400 Ethernet Access Switch Hardware Installation Guide
OL-7678-01
APPENDIX
B
Connector and Cable Specifications
This appendix describes the Cisco ME switch ports and the cables and adapters that you use to connect
the switch to other devices.
Connector Specifications
These sections describe the connectors used with the switch.
10/100 Ports
The 10/100 Ethernet ports use standard RJ-45 connectors and Ethernet pinouts with internal crossovers.
These ports have the send (TD) and receive (RD) signals internally crossed so that a twisted-pair
straight-through cable and adapter can be attached to the port. Figure B-1 shows the pinout for a 10/100
port.
Figure B-1 10/100 Port Pinouts
When connecting 10/100 ports to compatible devices such as servers, workstations, and routers, you can
use a two or four twisted-pair straight-through cable wired for 10BASE-T and 100BASE-TX. Figure B-4
shows the two twisted-pair straight-through cable schematics. Figure B-6 shows the four twisted-pair
straight-through cable schematics.
When connecting the ports to other devices, such as switches or repeaters, you can use a two or four
twisted-pair crossover cable. Figure B-5 shows the two twisted-pair crossover cable schematics.
Figure B-7 shows the four twisted-pair crossover cable schematics.
H5318
231 45678Pin Label
1
2
3
4
5
6
7
8
RD+
RD-
TD+
NC
NC
TD-
NC
NC
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