3-1 
3  Installing a Switch 
 
 
On a mounting screw of the chassis of the 3Com series switches, there is a seal labeled. You need to 
keep it intact before asking the agent to maintain the switch. You need to get the permission of the local 
agent before you can open the chassis. Otherwise, you will be responsible for irreversible damages 
caused by your operations. 
 
Installing the Switch into a 19-Inch Rack Using Mounting Brackets 
The 3Com Baseline Switch 2900 Family is shipped with a pair of mounting brackets to fix and support 
the switch. 
Figure 3-1 shows how to install a 3Com Baseline Switch 2900 Family into a 19-inch rack.  
Figure 3-1 Install a 3Com Baseline Switch 2900 Family into a 19-inch rack  
 
 
Introduction to Mounting Brackets  
Table 3-1 Mounting brackets for the 3Com Baseline Switch 2900 Family  
Model  Mounting bracket  Description 
3Com Baseline Switch 
2920-SFP Plus 
3Com Baseline Switch 
2928-SFP Plus 
Two-holed mounting 
brackets (standard) 
Figure 3-2 shows the appearance. 
3Com Baseline Switch 
2952-SFP Plus 
3Com Baseline Switch 
2928-PWR Plus 
3Com Baseline Switch 
2928-HPWR Plus 
Four-holed mounting 
brackets (standard) 
Figure 3-3 shows the appearance.