NEC QX-S5500G Series - Grounding the Switch; Mounting the Switch on a Workbench

Installation Guide
QX-S5500G Series Ethernet Switches
3. Installing the switch
3-7
Figure 3-9 Mounting the switch in the rack (front mounting brackets at the middle installation position)
3.3 Mounting the switch on a workbench
IMPORTANT:
 Ensure good ventilation and 10 cm (3.9 in) of clearance around the chassis for heat dissipation.
 Avoid placing heavy objects on the switch.
To mount the switch on a workbench:
1) Verify that the workbench is sturdy and correctly grounded.
2) Place the switch with bottom up, and clean the round holes in the chassis bottom with
dry cloth.
3) Attach the rubber feet to the four round holes in the chassis bottom.
4) Place the switch with upside up on the workbench.
3.4 Grounding the switch
WARNING:
Correctly connecting the switch grounding cable is crucial to lightning protection and EMI protection.