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Are PC Card and ExpressCard compatible?

April 26, 2017card compatible expresscard pc

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Are PC Card and ExpressCard compatible?

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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. What is the throughput of the PC Card interface? Theoretical maximums are as follows: CardBus (32 bit burst mode) * Byte mode: 33 Mbytes/sec * Word mode: 66 Mbytes/sec * DWord mode: 132 Mbytes/sec 16-bit Memory Transfers (100 ns Minimum cycle) * Byte mode: 10 Mbytes/sec * Word mode: 20 M