Rack-Mount the Chassis
The ASA ships with rack-mount brackets or “ears,” which you can install on the front or the rear of the chassis. Follow these steps to install your chassis in a rack.
Attach both brackets to the sides of the chassis, either to the front or rear.
After the brackets are secured to the chassis, you can mount it in the rack.
Attach the chassis to the rack.
We recommend that you install the chassis with the rear panel facing the cold aisle. (See the following illustration for an example of air flow from back to front.)
What to do next
Install the cables as described in the Cisco ASA 5506-X Series Quick Start Guide.