Snap module and chassis applicable

The present invention discloses a locking module suitable chassis, comprising a cover plate, snap module comprising: a beam-like structure having a first and second trenches; and a fastening member having a back plate, a first an engaging portion and second engaging portion; wherein the first cover plate disposed in the groove-like beam structure, the first engaging portion and the engaging member is provided corresponding to the first groove, so that the buckle bonded to the backing plate abuts against the cover member, and then fastening the second engaging portion corresponding to the second engagement member is a channel-like structure and buckle beams provided, thereby engaging member so firmly to the beam-like structure for engaging, through the cover plate abuts against the engaging member is tightly fixed to the chassis.