You will need a special set of security hex-bit screw-driver tips to get the cover off this baby. (I think I got mine at Microcenter, but I've seen them elsewhere for under $10 for 32 bits.)

There are a number of these screws on the sides, and back. Then the top slides back and up & away.

We are looking at the marketing side of the box. Its in a 1U format to be rack-mounted.