Rack-Mount Placement; Reduced Air Flow; Mechanical Overloading; Circuit Overloading - Cisco 500 Series Quick Start Manual

Reduced Air Flow—Both side panels must be unobstructed to prevent
overheating.
Mechanical Overloading—The device should be level, stable, and
secure to prevent it from sliding or shifting out of position.
Circuit Overloading—Adding the device to the power outlet must not
overload that circuit.

Rack-Mount Placement

Remove the four screws from each side near the front of the switch.
S 1
TEP
Retain the screws for re-installation. Do not remove the four screws
from each side near the back of the switch.
Place one of the supplied spacers on the side of the switch so the
S 2
TEP
four holes of the spacers align to the screw holes. Place a rack
mount bracket next to the spacer and reinstall the four screws
removed in step 1.
Suggested screw size is 6.9 mm (diameter) x 6 mm (height). If your
N
OTE
screws are not long enough to reattach the bracket with the spacer in
place, attach the bracket directly to the case without the spacer.
Repeat
S 3
TEP
After the mounting hardware has been securely attached, the
S 4
TEP
switch is now ready to be installed into a standard 19-inch rack.
4
Step 2 for the other side of the switch.
500 Series Stackable Managed Switches