Computer housing with a disc storage device

A computer housing comprising:

• a housing body having a top surface;
• a disc storage device mounted detachably on said top surface of said housing body and including
• a casing having upper and lower sides, said upper side being formed with a receiving recess adapted for receiving an optical disc, said receiving recess having an open top end,
• a cover body connected pivotally to said upper side of said casing and operable so as to move from a closed position, where said cover body closes said open top end of said receiving recess, to an open position, where said cover body uncovers said open top end of said receiving recess,
• a biasing member disposed between said casing and said cover body for biasing said cover body to move from the closed position to the open position, and
• a releasable retaining member disposed on said casing and said cover body for retaining said cover body at the closed position;
• and
• an engaging unit disposed on said lower side of said casing of said disc storage device and said top surface of said housing body for detachable engagement between said housing body and said casing of said disc storage device.