Computer Cases There are 5 products.

A computer case (also known as a computer chassis, cabinet, box, tower, enclosure, housing, system unit or simply case) is the enclosure that contains most of the components of a computer (usually excluding the display, keyboard and mouse).
Major component locations

The motherboard is usually screwed into the case
Form factors such as ATX provide a back panel with cut-out holes to expose I/O ports
The power supply unit is often housed at the top rear of the case; it is usually attached with four screws to support its weight.
Most cases include drive bays on the front of the case; a typical ATX case includes both 5.25" and 3.5" bays. In modern computers, the former are used mainly for optical drives, while the latter are used for hard drives, floppy drives, and card readers