Which memory card type comes in Type I or II and consumes only five percent of the power?

• A. SD Memory
• B. CF Memory
• C. MMC Memory
• D. SM Memory

Answer: (B)

CompactFlash cards are defined by two physical thickness options—Type I and Type II. Type I is 3.3 millimeters thick, while Type II is 5.0 millimeters thick, and the latter was created to accommodate thicker media like the IBM Microdrive. This pairing of two form factors and the card’s relatively low power draw make CompactFlash distinctive among common memory card types. The claim that it consumes only a small fraction of power fits with CF’s reputation for efficiency in portable devices, often described as around a few percent of power compared with other card types. Other formats don’t use the Type I/II distinction: SD and MMC have their own standard sizes, and SmartMedia is a single, very thin format, not defined by Type I or II.