PowerBooks with CardBus Support

The PC Card was originally called the PCMCIA card when it was launched in November 1990. It is compatible with the Japanese JEIDA memory card 4.0 standard and supports a 16-bit ISA-compatible data bus. PC Cards may be 5V, 3.3V, or both, and 3.3V cards have a key that prevents them from being plugged into 5V PC Cards slots.

PC Card and CardBus card

Note that CardBus has a golden grounding strip.

PCMCIA cards were originally memory cards, but as the industry saw the potential of the ISA-compatible bus, version 2 added a great deal more flexibility to the standard. This is when the name PC Card was adopted.

CardBus, introduced in 1995, is a 32-bit expansion of the PC Card standard. CardBus adds bus mastering and operation at up to 33 MHz. CardBus also supports burst mode, which can transfer data at up to 132 MB/sec.

CardBus cards cannot be plugged into PC Card slots, but PC Cards can be plugged into CardBus slots. (CompactFlash memory cards have the same electrical specifications as PC Card, so CF adapters are trivially simple.)

ExpressCard was the next generation of card slot and is completely incompatible with PC Card and CardBus. It is fully compatible with PCIe. Introduced in 2003, ExpressCard/34 was supported on 15″ and 17″ MacBook Pro models. Speeds range from 280 Mb/sec. to 3.2 Gb/sec.

PowerBooks with Built-in CardBus Support

These models have one Type II CardBus slot unless otherwise noted.

PowerBooks Upgradeable to CardBus

Resources

PowerBooks Limited to PC Cards

These models have two Type II PC Card slots and also support a single Type III card unless otherwise noted. They cannot be upgraded to CardBus.

keywords: #pccard #cardbus #pcmcia

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