If you are in an airconditioned environment this server cart is very handy (meaning that if you are not, then you want the computer on the floor). You don't have to take up room on your desk. Your not bending down to the floor to work on it because its at a comfortable height. If you put large casters on the bottom you will have a heavy duty solution - no matter how many power supplies you have in your case. Often times I will put two or 3 power supplies in 1 case, 4 graphics cards (for 16 screens), and other components which weigh a lot but one of my cases supports 6 power supplies. This cart also has a storage shelf below for extra components.

Server Cart V1-0-1 supports parametric resizing for Width on Depth on the control panel slate in MathCompiler3D. Height will be supported in the next version.

However, in the meantime, if you need a longer cart - you are good to go.