PC card

In computing, PC Card is a configuration for computer parallel communication peripheral interface, designed for laptop computers, mostly no longer used for laptops (or elsewhere), nor is its successor. Now mostly used are external devices instead of these internal cards, such as connected by USB, that use serial communication, or in rare cases PC Card's successor ExpressCard (also serial, while the parallel form of communication is much less used than previously for most standards, with the PC Card about the last holdout). Originally introduced as PCMCIA Card, the PC Card standard as well as its successors like CardBus were defined and developed by the Personal Computer Memory Card International Association (PCMCIA).