Abstract: A chassis includes a shell, two sliding rails, a slider and a bracket. The two sliding rails are fixed to the shell. The slider is slidably fixed to one of the two sliding rails. The slider includes a positioning post. The bracket defines a groove. The positioning post is located in the groove and moves from a first position to a second position along the groove. When the positioning post is located at the first position, the bracket is locked with the shell. When the positioning post is located at the second position, the bracket is unlocked from the shell and can move away relative to the shell.

Abstract: An electronic device includes a main body, an installing assembly, a support, and a connecting assembly. The main body includes a shell and a display screen installed in the shell. The installing assembly is connected to a side of the shell opposite to the display screen. The connecting assembly is rotatably connected between the installing assembly and the support. The support includes a connecting pole and two opposite extending poles perpendicularly extending out from two opposite ends of the connecting pole. The connecting pole and the extending poles cooperatively bound a receiving space. The connecting assembly can be rotated to be received in the receiving space.