Detachable cover module and chassis having the same

A chassis, comprising:

• a chassis body having a pivot column and a closed column, an opening being between the pivot column and the closed column, and the closed column having a latch portion;
• and
• a detachable cover module, one side of the detachable cover module being pivotally disposed on the pivot column so that the detachable cover module pivots between an open position and a closed position, and the detachable cover module comprising:
• a bezel body;
• a button, one end thereof being pivotally connected to the bezel body, and the button comprising a pushing member;
• and
• a sliding member comprising a connecting portion and a guiding element, when the button is pressed in a first direction, the pushing member pushing the guiding element, so that the connecting portion of the sliding member moves in a second direction from a position protruding outward from the bezel body toward a position not protruding outward from the bezel body, wherein an included angle is formed between the first direction and the second direction, and when the detachable cover module is located at the closed position and the connecting portion protrudes outward from the bezel body, the connecting portion is located on the latch portion.