Case of a computer.

 A case:  is the outer shell of a computer. This case is what the motherboard, hard drives, cd drives, etc are mounted to make the complete computer. Somethings the case have a ventilation system that keep in a normal temperature.

Video to know all about the computer case> 

Here you have 3 diferent tipes of cases top in the market:

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PC Case MPC-45 Micro Tower MATX USB 3.0 Negra

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Forgeon Arcanite ARGB Mesh Torre ATX Negra

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Tempest Spook RGB Torre ATX Negra