Thx ... those cable spaces antec give you are a god send, but seriously lacking in quality control, half of the edges are sharp as h3ll and you see those little round brown things ? ... well those are additional threaded stand off mounts in the tray area, but unlike the main ones that are of the pressed in design as you see, these additional ones are of the "fold the tray material back and thread it" type, which is seriously sharp on the rear side, and a definite problem if running cables over them, so those little brown caps are nothing more than push on covers that you get with kitchen units to place on the screw heads that hold the units together, work pretty well as it goes