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ExpressCard/54

ExpressCard/54 is a type of hardware expansion slow used in laptops that replaces the PC card or PCMCIA card expansion slow standard. Both standards were created by Personal Computer Memory Card International Association (PCMCIA), with the ExpressCard/54 accepting a connection of Firewire 800, Serial ATA external disk drives, wireless network cards, TV tuner cards, additional sound cards and others. Cards in an ExpressCard slot are hot-pluggable, meaning they can be activated by connecting them while the computer is on. The ExpressCard/54 is L-shaped with the external portion measuring 54 mm wide and the connector at 34 mm (same port as the ExpressCard/34). ExpressCards communicate with a higher bandwidth than a PCMCIA card because they function through both the PCI Express and USB 2.0 paths. Many laptop manufacturers incorporate an ExpressCard/54 slot into certain models, including Acer Aspire, Panasonic's Toughbooks, and late-model Gateway notebooks.

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