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A personal computer includes a frame unit and a top cover mounted to pivot upward and outward to the rear of the system, or alternately, upward to the side. One or more DASD storage devices may be mounted to extend downward from the top cover. A planar board is attached atop the lower side of the fr

A personal computer includes a frame unit and a top cover mounted to pivot upward and outward to the rear of the system, or alternately, upward to the side. One or more DASD storage devices may be mounted to extend downward from the top cover. A planar board is attached atop the lower side of the frame unit, where flexible mounting hardware allows the attachment of one of several types of planar boards. A central support structure includes a riser card plugged into a connector of the planar board, and a number of card connectors into which option cards can be plugged for electrical connection with the planar board. The central support structure also includes a bracket extending along the rear of the computer, having slots through which port connectors of the option cards can extend. The central support structure is held in engagement with the connector of the planar board by the top cover when this cover is closed. When the top cover is open, the DASD storage devices may be easily replaced, the central support structure may be unplugged from the planar board, and the planar board can be easily replaced or serviced. A front surface of the computer includes a door, which is opened by rotation outward and downward, to be slid inward, providing access for the replacement of media in the storage devices. This door and the top cover are separately lockable using a multi-function lock.

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Personal computer apparatus comprising: a frame with a generally flat bottom portion, an upstanding attachment side, and a rear frame opening, said frame being open above said bottom portion; an essentially rectangular front frame bezel extending along a front edge of said bottom portion and along s

Personal computer apparatus comprising: a frame with a generally flat bottom portion, an upstanding attachment side, and a rear frame opening, said frame being open above said bottom portion; an essentially rectangular front frame bezel extending along a front edge of said bottom portion and along said upstanding attachment side, attached to said frame, wherein said attachment side of said frame extends rearward from said front frame bezel; a planar board assembly fastened within said frame, by planar board attachment means, to said bottom portion, said planar board assembly including a riser connecter directed upward from said planar board assembly; a central support structure for electrically connecting option card assemblies with said planar board assembly, said central support structure including a riser card engaging said riser connector, a plurality of card connectors on said riser card electrically connected through said riser card to said riser connector, and a rear attachment framework extending within said rear frame opening, wherein said rear attachment framework includes a plurality of rear slots extending therethrough and means for attaching a plurality of card assemblies of a first type in alignment with said rear slots and in engagement with various of said card connectors; an “L”-shaped cover with a generally flat top portion and a cover side extending downward at a side of said top portion opposite said attachment side of said frame, said cover being open below said top portion; a storage device attached to said top portion, extending below said top portion, by storage device attachment means; and cover attachment means attaching said top cover to said frame section to pivot about an axis extending along said attachment side of said frame, permitting pivotal movement of said top cover between a closed cover position, in which said central support structure is held in engagement with said riser connector, and an open cover position in which said central support structure can be disengaged from said riser connector, wherein said cover moves substantially through a ninety-degree angle between said closed cover position and said open cover position with said top portion of said cover extending horizontally in said closed cover position and vertically in said open cover position. Personal computer apparatus comprising: a frame section with a generally flat bottom portion, a front frame bezel, and a rear frame opening, said frame section being open above said bottom portion; a planar board assembly fastened within said frame section, by planar board attachment means, to said bottom portion, said planar board assembly including a riser connecter directed upward from said planar board assembly; a central support structure for electrically connecting option card assemblies with said planar board assembly, said central support structure including a riser card engaging said riser connector, a plurality of card connectors on said riser card electrically connected through said riser card to said riser connector, and a rear attachment framework extending within said rear frame opening, wherein said rear attachment framework includes a plurality of rear slots extending therethrough and means for attaching a plurality of card assemblies of a first type in alignment with said rear slots and in engagement with various of said card connectors; a top cover with a top portion, said top cover being open below said top portion; a storage device attached to said top portion, extending below said top portion, by storage device attachment means; cover attachment means attaching said top cover to said frame section along a cover attachment edge of said top cover and along a frame attachment of said frame section, permitting pivotal movement of said top cover between a closed cover position, in which said central support structure is held in engagement with said riser connector, and an open cover position in which said central support structure can be disengaged from said riser connector; a socket assembly for removably receiving a circuit card of a second type, said socket assembly including a plurality of socket contacts for establishing electrical contact with a plurality of mating contacts along an end of said second type of circuit card inserted therein; an ejection mechanism for facilitating removal of said second type of circuit card; and a bracket attaching said socket assembly and said ejection mechanism to said rear attachment framework in alignment with one of said rear slots for inserting and ejecting said circuit card of a second type therethrough.