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2. External storage - Wikipedia

   en.wikipedia.org/wiki/External_storage

   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.

3. Flash memory - Wikipedia

   en.wikipedia.org/wiki/Flash_memory

   Flash memory does not have the mechanical limitations and latencies of hard drives, so a solid-state drive (SSD) is attractive when considering speed, noise, power consumption, and reliability. Flash drives are gaining traction as mobile device secondary storage devices; they are also used as substitutes for hard drives in high-performance ...

4. Solid-state drive - Wikipedia

   en.wikipedia.org/wiki/Solid-state_drive

   Solid-state hybrid drives (SSHDs) are based on the same principle, but integrate some amount of flash memory on board of a conventional drive instead of using a separate SSD. The flash layer in these drives can be accessed independently from the magnetic storage by the host using ATA-8 commands

5. Solid-state storage - Wikipedia

   en.wikipedia.org/wiki/Solid-state_storage

   A USB flash drive connects via USB and is not constrained by shape and size as a card is. [2] [11] In general, an SSD uses a relatively fast interface such as Serial ATA (SATA) or PCI Express (PCIe) paired with a logical device interface such as AHCI or NVM Express (NVMe).

6. 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).

7. Non-volatile memory - Wikipedia

   en.wikipedia.org/wiki/Non-volatile_memory

   Flash memory is a solid-state chip that maintains stored data without any external power source. It is a close relative to the EEPROM; it differs in that erase operations must be done on a block basis, and its capacity is substantially larger than that of an EEPROM. Flash memory devices use two different technologies—NOR and NAND—to map data.