An expanSion card for the IBM PC AT. TheSe can be larger than IBM PC or IBM PC XT cardS becauSe the AT caSe iS bigger. When IBM introduced the PS/2 model 30 (itS laSt gaSp at Supporting the ISA) they made the caSe lower and many induStry-Standard tall cardS wouldn' t fit. ThiS waS felt to be a reincarnation of the connector conSpiracy, done with leSSStyle. See alSo Short card. [Jargon File] (1995-03-01)