PCMCIA (cardbus) cards are used on a variety of laptops and have a huge range of uses. They have been used for GPRS modems, wireless LANS, Bluetooth adapters, CardBus hard drives, FireWire/USB
host controllers, Serial-ATA host controllers, LAN adapters, and more. Most desktop PC's don't come with PCMCIA card slots but using the PCI to PCMCIA controller card, you can use all of these cards and accessories on your PC, as well as laptops. All you need is a PCI slot which are found on most PCs.
This PCI to PCMCIA controller card uses the ENE chipset and still supports and allows access to Type I, II, or III PCMCIA Cards and supports 16-bit (PCMCIA 2.1 / JEIDA 4.2) and 32-bit (CardBus) PC card with 3.3V / 5V.