B-5
Catalyst 3750 Switch Hardware Installation Guide
OL-6336-07
Appendix B Connector and Cable Specifications
Cable and Adapter Specifications
For more information about XENPAK modules, see your XENPAK module documentation.
Note The 10-Gigabit Ethernet XENPAK modules are referred to as 10-Gigabit Ethernet module ports in the
software documentation.
Console Port
The console port uses an 8-pin RJ-45 connector, which is described in Table B-4 and Table B-5. The
supplied RJ-45-to-DB-9 adapter cable is used to connect the console port of the switch to a console PC.
You need to provide a RJ-45-to-DB-25 female DTE adapter if you want to connect the switch console
port to a terminal. You can order a kit (part number ACS-DSBUASYN=) containing that adapter from
Cisco. For console port and adapter pinout information, see Table B-4 and Table B-5.
Cable and Adapter Specifications
These sections describe the cables and adapters used with Catalyst 3750 switches:
• SFP Module Cable Specifications, page B-5
• Two Twisted-Pair Cable Pinouts, page B-6
• Four Twisted-Pair Cable Pinouts for 10/100 Ports, page B-7
• Identifying a Crossover Cable, page B-8
• Four Twisted-Pair Cable Pinouts for 1000BASE-T Ports, page B-9
• Crossover Cable and Adapter Pinouts, page B-9
SFP Module Cable Specifications
Table B-3 lists the cable specifications for the fiber-optic SFP module connections. Each port must
match the wave-length specifications on the other end of the cable, and for reliable communications, the
cable must not exceed the required cable length. Copper 1000BASE-T SFP transceivers use standard
four twisted-pair, Category 5 or greater cable at lengths up to 328 feet (100 meters).
Table B-3 Fiber-Optic SFP Module Port Cabling Specifications
SFP Module
Wavelength
(nanometers) Fiber Type
Core Size/Cladding
Size (micron)
Modal Bandwidth
(MHz/km)
1
Cable Distance
100BASE-BX
(GLC-FE-100BX-D
GLC-FE-100BX-U)
1310 TX
1550 RX
SMF G.652
2
— 32,810 feet (10 km)
100BASE-FX
(GLC-GE-100FX)
1310 MMF 50/125
62.5/125
500
500
6,562 feet (2 km)
6,562 feet (2 km)
100BASE-FX
(GLC-FE-100FX)
1310 MMF 50/125
62.5/125
500
500
6,562 feet (2 km)
6,562 feet (2 km)
100BASE-LX
(100BASE-LX10)
1310 SMF G.652
2
— 32,810 feet (10 km)
