Chapter 25. Installation Guide
The SFP modules that can be used with DM4000 Series Switches and each respective maximum fiber
length are described in the table below:
Table 25-2. Gigabit SFP Modules
SFP Module Fiber Type Maximum Length
1000BASE-SX multimode 550m
1000BASE-LX singlemode 10km
1000BASE-LX+ singlemode 30km
1000BASE-LH singlemode 80km
1000BASE-LZ singlemode 120km
"These modules are the most used. Contact technical support for the complete and updated SFPs
module list."
WARNING:
"Signals over fiber optic cables are transmitted via lasers. Although the lasers are compliant with the
requirements of Class 1 Laser Products and are eye safe in normal conditions, never look directly at a
transmit port when it is turned on!"
25.6.2. Removing SFP Modules
To remove SFP modules follow the instructions below:
Figure 25-16. Removing an optical SFP Module from an interface board
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