The Ruckus 902-0120-0000 is an optional mounting bracket designed for the R320,R510,R550,R610,R650,R720,R750 and R850. This bracket supports mounting to walls, ceilings, and trusses. This bracket clicks into the screw holes on the bottom of the AP. The biggest advantage of this bracket is for installations that have the ethernet ran to a 1 gang box. This bracket screws right to the box allowing for easy installation.