LPX motherboard - Computer Definition
(Low-Profile EXtended motherboard) A low-profile PC motherboard for slimline cases, introduced in 1997 by Western Digital. Unlike boards for desktop and tower cases that hold the expansion cards perpendicular to the board, cards plug into a riser card on the LPX and are parallel with the board. Having a 9" width, the Mini LPX version decreased the length from 13" to 11". See PC motherboards.