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2. Comparison of memory cards - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_memory_cards

   Same build as miniSD but greater capacity and transfer speed, 4 GB to 32 GB. 8 GB is largest in early-2011 (not compatible with older host devices). microSDHC: 2007 32 GB [5] Same build as microSD but greater capacity and transfer speed, 4 GB to 32 GB. [6] (not compatible with older host devices) SDXC: 2009 1 TB

3. USB flash drive - Wikipedia

   en.wikipedia.org/wiki/USB_flash_drive

   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).

4. SanDisk - Wikipedia

   en.wikipedia.org/wiki/SanDisk

   The company is known for its flash memory products, including memory cards and readers, USB flash drives, solid-state drives, and digital audio players. The company was owned by Western Digital (WD) from 2016 to 2025; in 2023, WD announced its intent to divest the entirety of its flash storage business as a new public company under the SanDisk ...

5. ReadyBoost - Wikipedia

   en.wikipedia.org/wiki/ReadyBoost

   Desktop hard drives can sustain anywhere from 2 to 10 times the transfer speed of USB 2.0 flash drives but are equal to or slower than USB 3.0 and Firewire (IEEE 1394) for sequential data. USB 2.0 and faster flash drives have faster random access times: typically around 1 ms, compared to 12 ms for mainstream desktop hard drives.

6. Flash memory - Wikipedia

   en.wikipedia.org/wiki/Flash_memory

   Flash memory is an electronic non-volatile computer memory storage medium that can be electrically erased and reprogrammed. The two main types of flash memory, NOR flash and NAND flash, are named for the NOR and NAND logic gates. Both use the same cell design, consisting of floating-gate MOSFETs. They differ at the circuit level depending on ...

7. USB mass storage device class - Wikipedia

   en.wikipedia.org/wiki/USB_mass_storage_device_class

   The Linux kernel has supported USB mass-storage devices since version 2.3.47 [3] (2001, backported to kernel 2.2.18 [4]).This support includes quirks and silicon/firmware bug workarounds as well as additional functionality for devices and controllers (vendor-enabled functions such as ATA command pass-through for ATA-USB bridges, used for S.M.A.R.T. or temperature monitoring, controlling the ...