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A flash drive (also thumb drive, memory stick, and pen drive/pendrive) [1] [note 1] is a data storage device that includes flash memory with an integrated USB interface. A typical USB drive is removable, rewritable, and smaller than an optical disc , and usually weighs less than 30 g (1 oz).
Lexar Professional 2000x 64 GB SDXC UHS-II card. Lexar International is a brand of flash memory products, formerly American-owned, now manufactured by the Chinese memory company, Longsys. The Lexar "JumpDrive" trademark was often used synonymously with the term USB flash drives when the technology was first adopted.
Subcompact (15 mm × 11 mm × 1 mm), DRM, up to 2 GB. [4] (2 GB cards use larger block sizes and may not be compatible with some host devices. See Article) SDHC: 2006 32 GB [4] Same build as SD but greater capacity and transfer speed, 4 GB to 32 GB (not compatible with older host devices). miniSDHC: 2008 32 GB [4]
An assortment of flash drives Transcend JetFlash from 2014. 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.
Such storage devices may refer to removable media (e.g. punched paper, magnetic tape, floppy disk and optical disc), compact flash drives (USB flash drive and memory card), portable storage devices (external solid-state drive and enclosured hard disk drive), or network-attached storage.
All Memory Stick PROs larger than 1 GB support this high-speed mode, and High Speed Memory Stick PROs are backwards-compatible with devices that don't support the high-speed mode. High-capacity Memory Sticks such as the 4 GB versions are expensive compared to other types of flash memory such as SD cards and CompactFlash.