tall card n. A PC/AT-size expansion card (these can be
larger than IBM PC or XT cards because the AT case is bigger). See
also {short card}. 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 less
style.