Personal Computer (PC) card

A plug-in module device used to add functionality (such as wireless network access and additional RAM) to laptop computers and, less commonly, desktop computers. There are three types of PC Cards: type I, II, and III.

PC Card types vary by physical thickness, data path, data rate, and voltage. Type I PC Cards are available as a 16-bit interface, while type II and type III PC Cards are available as a 16-bit or 32-bit interface. The PC Card was superseded by the ExpressCard in 2003. PC Card was previously known as Personal Computer Memory Card International Association (PCMCIA) card.