All our products that plug into PCMCIA or CardBus slot in your Laptop
PCMCIA native interface is 16-bit. CardBus is a 32-bit extension of a PCMCIA slot.
Pin-wise they look the same. Some 32-bit only cards are designed with a larger notch
which prevents them from being inserted into 16-bit only PCMCIA slots.
PCMCIA - "People Can't Memorise Computer Industry Acronyms" - Unknown
PCMCIA - "Peripheral Component Microchannel Interconnect Architecture" - IBM