B-11
Catalyst 4948E an Catalyst 4948E-F Switch Installation Guide
OL-21561-02
Appendix B Transceiver, Chassis Connectors, and Cable and Adapter Specifications
Console Port
Table B-12 lists the SFP+ transceiver optical transmit and receive specifications.
Table B-13 lists the physical and environmental specifications for the 10-GB SFP+ transceivers.
Console Port
Both the Catalyst 4948E and the Catalyst 4948E-F switches can be accessed through a serial console
port located on the chassis front panel. The console port is 10/100/1000BASE-T port that uses an RJ-45
connector. The console port allows you to access the switch either locally (with a console terminal or
PC) or remotely (with a modem).
Table B-14 lists the console port pinouts.
Ta b l e B-12 SFP+ Transceiver Module Optical Transmit and Receive Specifications
SFP+ Transceiver
Module Model
Transceiver Type Transmit
Power (dBm)
Receive Power (dBm) Transmit and Receive
Wavelength (nm)
SFP-10G-SR 10GBASE-SR,
850-nm MMF
–1.3 (Max)
–7.3 (Min)
–1.0 (Max)
–9.9 (Min)
840 to 860
SFP-10G-LR 10GBASE-LR,
1310-nm SMF
0.5 (Max)
–8.2 (Min)
0.5 (Max)
–14.4 (Min)
1260 to 1355
SFP-10G-LRM 10GBASE-LRM,
1310-nm MMF and
SMF
0.5 (Max)
–6.5 (Min)
0.5 (Max)
–8.4 (Min average)
–6.4 (Min in OMA)
1260 to 1355
Ta b l e B-13 10-GB SFP+ Transceiver Physical and Environmental Specifications
Item Specification
Dimensions (H x W x D) 0.04 x 0.53 x 2.22 in. (8.5 x 13.4 x 56.5 mm)
Operating temperature
Storage temperature
32° to 122°F (0° to 50°C)
–40° to 185°F (–40° to 85°C)
Ta b l e B-14 Console Port Pinouts
Pin Signal Direction Description
1 RTS output request to send
2 DTR output data terminal ready
3 TXD output transmit data
4 GND — —
5 GND — —
6 RXD input receive data
7 DSR input data set ready
8 CTS input clear to send
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