There are many reasons for using the equipment chassis. One is protection, which is more obvious. If the hard shell of the equipment case does not wrap the internal parts of the equipment and keep them away from the external environment, dust, animals, toys, liquids, etc. may damage the internal parts of the equipment.

Taking the computer as an example, do you always want to check the optical drive, hard disk drive, motherboard, cable, power supply and all other parts that make up the device? The equipment chassis with protective device can also be used as a method to protect all these parts of the hidden equipment. No one really wants to see these parts every time they see the direction.

Another good reason to use the device chassis is to keep the area cool. Proper air circulation on the equipment components is another benefit of using the equipment chassis. Although the chassis has special vents to allow some fan air to escape, the rest of the chassis can be used to cool the hardware, otherwise the hardware will become very hot and may even overheat to the point of failure.

Keeping noisy equipment parts (such as fans) in an enclosed space inside the equipment chassis is a way to reduce the noise they emit.