2U server chassis is also called the 2u rack server chassis. The rack mount is suitable for a 19-inch rack, U is a unit that represents the external dimensions of the server, and the height of 2u server chassis is 44.445mmX2. 2u server chassis is an important part of the server accessories. Its main function is to place and fix each server accessory, which plays a supporting and protecting role. In addition, the computer chassis has an important role of electromagnetic radiation shielding. It is sconstituted a chassis shell, a bracket, a cooling fan, a hard disk connection board, a hard disk box, a panel, a switch, and an indicator light.