Macessity has introduced its $59.99 MX4 Rack Tray, an equipment rack tray designed especially for Apple's Mac mini.
The trey enables you to mount up to four Mac minis at a time on a single 19-inch wide tray, that fits into a standard equipment rack. The rack features air slots at the bottom to maximize airflow for each mini. You can also use cable ties to hold down excess cabling. Mounting hardware is included.