Abstract: A computer case with a function for fastening an interface card having an extension piece is provided. The computer case includes a positioning portion protruding from a surface of the computer case and having a connecting surface, and an interface card fastener mounted on the surface of the computer case and having a pressing surface pressing the extension piece of the interface card against the connecting surface.

Abstract: A computer case retention structure includes a cover and a base. The base has a bottom plate and a guided way with a protruding hook. The cover has at least one side plate, a first and second elastic blades are disposed on the side plate. A protrusion is extended downward from a tip of the second elastic blade to slide against the guided way. For fixing the cover onto the base, the protrusion slides over the protruding hook and then stopped by the protruding hook, so that the cover is fixed onto the base without being moved relative to the base. For removing the cover, a release element disposed on the first elastic blade is pressed to bend the first and second elastic blades, separating the protrusion from the guided way. Then the cover can be removed from the base without the protrusion being stopped.

Abstract: A computer case with a function for fastening an interface card having an extension piece is provided. The computer case includes a positioning portion protruding from a surface of the computer case and having a connecting surface, and an interface card fastener mounted on the surface of the computer case and having a pressing surface pressing the extension piece of the interface card against the connecting surface.

Abstract: A case fixing mechanism includes: a fixing device, located on a first case part; an assembling part, for containing the fixing device; a combination device, provided on the second case part; and a control device, for controlling the combination device to be in a first location or a second location. The combination device fixes the first case part and the second case part when the combination device is in the first location. The combination device enables the first case part to be separated from the second case part when the combination device is in the second location. By this mechanism, the first case part can be easily removed from the second case part in simple steps.

Abstract: A computer case retention structure includes a cover and a base. The base has a bottom plate and a guided way with a protruding hook. The cover has at least one side plate, a first and second elastic blades are disposed on the side plate. A protrusion is extended downward from a tip of the second elastic blade to slide against the guided way. For fixing the cover onto the base, the protrusion slides over the protruding hook and then stopped by the protruding hook, so that the cover is fixed onto the base without being moved relative to the base. For removing the cover, a release element disposed on the first elastic blade is pressed to bend the first and second elastic blades, separating the protrusion from the guided way. Then the cover can be removed from the base without the protrusion being stopped.