Case is the most important part of computer. Inside the case are all the original parts of the computer such as motherboard, RAM, processor, hard disk, cooling fan, power supply, graphics card, etc. It looks like a box.
![Aerocool SI-5100 computer case Midi-Tower Black | SI-5100 | Cases](https://aio.lv/img/product/113295/3091578_500x500.jpg)
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