Cisco 550X Series Stackable Managed Switches Quick Start Guide 3
Mounting the Cisco 550X Series Stackable 
Managed Switches
There are two ways to physically install the switch:
• Place the switch on a flat surface. To place the switch on a desktop, 
install the four rubber feet (included) on the bottom of the switch.
• Mount the switch in a standard rack (1 rack unit high).
Placement Tips
Do not deploy the switch in a location where any of the following 
conditions exist:
•Ambient Temperature—To prevent the switch from overheating, do not 
operate it in an area that exceeds an ambient temperature of 122°F 
(50°C).
•Air Flow—Be sure that there is adequate air flow around the switch.
• Mechanical Loading—Be sure that the switch is level and stable to 
avoid any hazardous conditions. 
• Circuit Overloading—Adding the switch to the power outlet must not 
overload that circuit.
These switches must be supplied by power from the building in which 
they are used or from UL listed information technology (ITE) equipment. For 
assistance with obtaining a power supply, contact your Cisco 
Representative.
Rack Mounting
You can mount the switch in any standard size, 19-inch (about 48 cm) wide 
rack. The switch requires 1 rack unit (RU) of space, which is 1.75 inches 
(44.45 mm) high. 
CAUTION For stability, load the rack from the bottom to the top, with the 
heaviest devices on the bottom. A top-heavy rack is likely to 
be unstable and might tip over.