A P P E N D I X
B
Connector and Cable Specifications
Revised: January 12, 2012
This appendix describes the Cisco ME 4924-10GE 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.
Connecting to 1000BASE-T Devices
When connecting the ports to 1000BASE-T devices, such as servers, workstations, and routers, you must
use a four-twisted-pair, Category 5, straight-through cable wired for 10BASE-T, 100BASE-TX, and
1000BASE-T.
When connecting the ports to other devices, such as switches or repeaters, you must use a
four-twisted-pair, Category 5, crossover cable. Be sure to use a four-twisted-pair, Category 5 cable when
connecting to a 1000BASE-T-compatible device.
Note
Use a straight-through cable to connect two ports only when one port is designated with an X. Use a
crossover cable to connect two ports when both ports are designated with an X or when both ports do
not have an X.
SFP Module Ports
The Cisco ME 4924-10GE switch uses SFP modules for fiber-optic and copper uplink ports. Refer to
the Cisco ME 4924-10GE switch release notes for a list of supported SFP modules.
Figure B-1
Fiber-Optic LC Connector
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Appendix B Connector and Cable Specifications
Cable and Adapter Specifications
Cable and Adapter Specifications
These sections describe the cables and adapters used with the Cisco ME 4924-10GE switch.
Adapter Pinouts
Table B-1 lists the pinouts for the console port, the RJ-45-to-DB-9 adapter cable, and the console device.
Table B-1
Console Port Signaling Using a DB-9 Adapter
Switch
Console
Port (DTE)
RJ-45-to-DB-9
Terminal Adapter Device
Console
Signal
RTS
DB-9 Pin
Signal
CTS
DSR
RxD
GND
GND
TxD
DTR
RTS
8
6
2
5
5
3
4
7
DTR
TxD
GND
GND
RxD
DSR
CTS
Table B-2 lists the pinouts for the console port, RJ-45-to-DB-25 female DTE adapter, and the console
device.
Note
The RJ-45-to-DB-25 female DTE adapter is not supplied with the switch. You can order a kit (part number
ACS-DSBUASYN=) containing this adapter from Cisco.
Table B-2
Console Port Signaling Using a DB-25 Adapter
Switch
Console
Port (DTE)
RJ-45-to-DB-25
Terminal Adapter Device
Console
Signal
RTS
DB-25 Pin
Signal
CTS
5
6
3
7
7
2
DTR
TxD
DSR
RxD
GND
GND
TxD
GND
GND
RxD
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Appendix B Connector and Cable Specifications
Console Port
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Table B-2
Console Port Signaling Using a DB-25 Adapter (continued)
Switch
Console
Port (DTE)
RJ-45-to-DB-25
Terminal Adapter Device
Console
Signal
DSR
CTS
DB-25 Pin
Signal
DTR
RTS
20
4
Console Port
The console port is an RJ-45 receptacle. The Request to Send (RTS) signal tracks the state of the Clear
Table B-3
Console Port Pinouts
Pin
1
Signal
Direction
output
output
output
—
Description
RTS
request to send
data terminal ready
transmit data
—
2
DTR
TXD
GND
GND
RXD
DSR
CTS
3
4
5
—
—
6
input
input
input
receive data
data set ready
clear to send
7
8
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