3com 4800G Installationsanweisungen

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Installing the Switch into a 19-Inch Cabinet
31
Introduction to Guide
Rails
Figure 19 shows the appearance of a guide rail.
Figure 19   Appearance of a guide rail
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Guide rails are optional parts. Check Table 12 to see whether you need to order 
them or not.
Using Front Mounting
Ears to Install the Switch
Follow these steps to install the switch into a 19-inch standard cabinet:
Wear an ESD-preventive wrist strap to check the grounding and stability of the 
cabinet.
Take out the screws which are packed together with the front mounting ears, and 
fix one end of mounting ears to the switch, as shown in Figure 20. 
Figure 20   Fix front mounting ears (1)
 
Place the switch horizontally in a proper position, and fix the other end of 
mounting ears to the front brackets with screws and captive nuts, as shown in 
Figure 21. 
Slotted hole 1: Used to fix the guide rail to the rear bracket. You can adjust the screw hole 
position according to the position of the switch. 
Cooling hole: Used for heat dissipation between switch and cabinet 
Slotted hole 2: Used to fix the guide rail to the front bracket
 
Slotted hole 1
Cooling hole
Slotted hole 2
 
Front panel