Itt azt írják nem kompatibilis.
Are PC Card and ExpressCard compatible?
No. Electrically, the PC Card interface utilizes a connection to ISA-style (16-bit interface) or PCI (CardBus interface) parallel busses. ExpressCard modules utilize either the PCI Express or Universal Serial Bus (USB) serial interfaces. Mechanically, the PC Card interface uses a 68-contact pin and socket connector, while the ExpressCard interface utilizes a 26-contact beam on blade connector. The ExpressCard Standard was developed to bring the high speed, flexibility and lower cost of the PCI Express and USB interfaces to an add-in module which does not require a device to attach externally to the host system, and making either the modules or the hosts backward compatible with PC Card is not feasible.
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