This rack is made for the Apple mac mini M4 model, the one released october 2024. Also available for 1 or 3 mac miniM4 in the same rack mount(Different article on Amazon). It is made for 19inch rack and require 2U in height. We use injection molded front panel which is very strong and has great surface finish. We then use 3D printed rear arms with perfect fit around the mac mini M4. This kit comes as standard with two RJ45 ethernet keystone (female-female) so you can connect from the front to the rear ethernet port on the back of each of the 2 mac mini M4