10/100 And 10/100 /1000 Ports; 100Base-Fx Ports - Cisco Catalyst 3750 Hardware Installation Manual

Connector Specifications

10/100 and 10/100 /1000 Ports

The 10/100 and 10/100/1000 Ethernet ports on Catalyst 3750 switches use standard RJ-45 connectors
and Ethernet pinouts with internal crossovers.
Figure B-1
Figure B-2

100BASE-FX Ports

The 100BASE-FX ports use MT-RJ connectors, as shown in
50/125- or 62.5/125-micron multimode fiber-optic cabling.
You can connect a 100BASE-FX port to an SC or ST port on a target device by using one of the MT-RJ
fiber-optic patch cables listed in
cables that you need.
Catalyst 3750 Switch Hardware Installation Guide
B-2
10/100 Port Pinouts
Pin Label
1 RD+
2 RD-
3 TD+
4 NC
5 NC
6 TD-
7 NC
8 NC
10/100/1000 Port Pinouts
Pin Label
1 TP0+
2 TP0-
3 TP1+
4 TP2+
5 TP2-
6 TP1-
7 TP3+
8 TP3-
Figure B-2 and
1 2 3
1 2 3
Table B-1. Use the Cisco part numbers in
Appendix B Connector and Cable Specifications
Figure B-1 show the pinouts.
4 5 6 7 8
4 5 6 7 8
Figure B-3. The 100BASE-FX ports use
Table B-1 to order the patch
OL-6336-06