What is PCMCIA Card Types (Type I, Type II, Type III)?
The PC Card Standard provides physical specifications for three types of PC Cards, with provisions for extended cards. Each card type has features that fit the needs of different applications. Type I PC Cards are typically used for memory devices such as RAM, Flash, OTP, and SRAM cards. Type II PC Cards are typically used for I/O devices such as data/fax modems, LANs, and mass storage devices. Type III PC Cards are used for devices whose components are thicker, such as rotating mass storage devices. These Extended cards allow the addition of components that must remain outside the system for proper operation, such as antennas for wireless applications. All three card types measure the same in length and width, and use the same 68-pin connector along the edge for connecting to a computer. The only difference between the card types is thickness, which vary as 3.3, 5.0, and 10.5 millimeters for Type I, Type II, and Type III cards respectively. Because they differ only in thickness, a thin
