Hi
To darren99:
The PCMCIA group, (
http://www.pcmcia.org) define the physical dimensions and electrical characteristics of the card.
A 32 bit card is defined as a Cardbus card, it is typically either Type II or III and has a 33 MHz 32 bit PCI interface and is normally 3.3V technology.
The original 16 bit, ISA style cards, can be a Type I, II or III size.
At least the new Express card has a different size!