Connector and Cable Specifications

Connector and Cable Specifications
Connector and Cable Specifications
This appendix contains these topics:
• Connector Specifications, page 1
• Cables and Adapters, page 2
Connector Specifications
10/100/1000 Ports (Including PoE)
All 10/100/1000 ports use standard RJ-45 connectors and Ethernet pinouts.
Figure 1: 10/100/1000 Port Pinouts
Catalyst 3560-CX and 2960-CX Switch Hardware Installation Guide
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Connector and Cable Specifications
SFP Module Connectors
SFP Module Connectors
Figure 2: Duplex LC Cable Connector
Figure 3: Simplex LC Cable Connector
Figure 4: Copper SFP Module LC Connector
Cables and Adapters
SFP Module Cables
For cabling specifications, refer to the following notes:
Catalyst 3560-CX and 2960-CX Switch Hardware Installation Guide
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Connector and Cable Specifications
SFP Module Cables
• Cisco SFP and SFP+ Transceiver Module Installation Notes
• Cisco 40-Gigabit QSFP+ Transceiver Modules Installation Note
Each port must match the wave-length specifications on the other end of the cable, and the cable must not
exceed the stipulated cable length. Copper 1000BASE-T SFP module transceivers use standard four twisted-pair,
Category 5 cable at lengths up to 328 feet (100 meters).
Catalyst 3560-CX and 2960-CX Switch Hardware Installation Guide
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Connector and Cable Specifications
Cable Pinouts
Cable Pinouts
Figure 5: Four Twisted-Pair Straight-Through Cable Schematic
Figure 6: Four Twisted-Pair Semi-Cross Cable Schematic
Figure 7: Two Twisted-Pair Straight-Through Cable Schematic
Figure 8: Two Twisted-Pair Crossover Cable Schematic
Catalyst 3560-CX and 2960-CX Switch Hardware Installation Guide
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Connector and Cable Specifications
Console Port Adapter Pinouts
Identifying a Crossover Cable
To identify a crossover cable, compare the two modular ends of the 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 a different
color from the wire connected to the pin on the inside of the right plug.
Figure 9: Identifying a Crossover Cable
Console Port Adapter Pinouts
The RS-232 console port uses an 8-pin RJ-45 connector. Use an RJ-45-to-DB-9 adapter cable to connect the
switch console port to a console PC. You need to provide a RJ-45-to-DB-25 female DTE adapter to connect
the switch console port to a terminal.
Table 1: Console Port Signaling with a DB-9 Adapter
Switch Console Port (DTE)
RJ-45-to-DB-9 Terminal Adapter
Console Device
Signal
DB-9 Pin
Signal
RTS
8
CTS
DTR
6
DSR
TxD
2
RxD
GND
5
GND
GND
5
GND
Catalyst 3560-CX and 2960-CX Switch Hardware Installation Guide
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Connector and Cable Specifications
Console Port Adapter Pinouts
Switch Console Port (DTE)
RJ-45-to-DB-9 Terminal Adapter
Console Device
Signal
DB-9 Pin
Signal
RxD
3
TxD
DSR
4
DTR
CTS
7
RTS
Table 2: Console Port Signaling with a DB-25 Adapter
Switch Console Port (DTE)
RJ-45-to-DB-25 Terminal Adapter
Console Device
Signal
DB-25 Pin
Signal
RTS
5
CTS
DTR
6
DSR
TxD
3
RxD
GND
7
GND
GND
7
GND
RxD
2
TxD
DSR
20
DTR
CTS
4
RTS
Catalyst 3560-CX and 2960-CX Switch Hardware Installation Guide
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