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A flash drive is: a portable computer drive that uses flash memory. Flash drives are the: larger memory modules consisting of a number of flash chips. A flash chip is used to read the——contents of a single cell. But it can write entire block of cells. They connect to a USB port and "function as a folder."

Specific flash drive types※

Memory cards:

• Flash memory-based CompactFlash (CF) card (including CFast card) and XQD card (Note: some other types of CF and XQD card are not flash memory-based)
• Memory Stick (MS)
• MultiMediaCard (MMC)
• Secure Digital card (SD, "SDHC," SDXC)
• SmartMedia card (SM)
• xD-Picture Card (xD)

Other:

• Solid-state drive, SSD, using flash memory (a few SSDs use DRAM. Or MRAM)
• USB flash drive (UFD)

See also※

• Flash memory
• Comparison of memory cards

References※

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