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In January 2013, tech company Kingston, released a flash drive with 1 TB of storage. [24] The first USB 3.1 type-C flash drives, with read/write speeds of around 530 MB/s, were announced in March 2015. [25] By July 2016, flash drives with 8 to 256 GB capacity were sold more frequently than those with capacities between 512 GB and 1 TB.
The internal SSD is connected to the external USB-C interface via an ASMedia 2362 bridge chip. Power for the drive is supplied via the USB connection, requiring the USB host port to be able to supply 5V at up to 1.5A. The drive was made available in capacities of 500 GB and 1 TB. [2] The drive is formatted as exFAT by default. [3]
NAND flash memory forms the core of the removable USB storage devices known as USB flash drives, as well as most memory card formats and solid-state drives available today. The hierarchical structure of NAND flash starts at a cell level which establishes strings, then pages, blocks, planes and ultimately a die.
Picture [1] Main features CompactFlash: SanDisk: I 1994 512 GB (CF5 128*2 50 bytes) Thinner (3.3 mm), flash only, now up to 512 GB, although standard goes up to 128 PB since CF 5.0 [2] II Thicker (5.0 mm), older flash, but usually Microdrives, up to 128 PiB [2] CFexpress: CompactFlash Association: 1.0 2017 1 TB
Block mapping can has smaller metadata size and lower cost, but it has lower performance, and its usually used on USB flash drives. On page mapping FTL implementations, the ratio of FTL metadata size and storage capacity is usually 1:1000, for example, a 1TB flash storage device may has 1GB of FTL metadata.
Few USB devices made it to the market until USB 1.1 was released in August 1998. USB 1.1 was the earliest revision that was widely adopted and led to what Microsoft designated the "Legacy-free PC". [26] [27] [28] Neither USB 1.0 nor 1.1 specified a design for any connector smaller than the standard type A or type B.