A movable cover-plate of a computer host is installed on a front panel of the computer host to cover a slot of hard disk driver and a slot of CD-ROM disk driver of the front panel in normal times, and to be opened by being pressed down, when being used....http://www.google.com/patents/US7431408?utm_source=gb-gplus-sharePatent US7431408 - Movable cover-plate of a computer host
