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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.
The USB connector may be protected by a removable cap or by retracting into the body of the drive, although it is not likely to be damaged if unprotected. Most flash drives use a standard type-A USB connection allowing connection with a port on a personal computer, but drives for other interfaces also exist (e.g. micro-USB and USB-C ports).
In early 2011, Centon Electronics, Inc. (64 GB and 128 GB) and Lexar (128 GB) began shipping SDXC cards rated at Speed Class 10. [35] Pretec offered cards from 8 GB to 128 GB rated at Speed Class 16. [36] In September 2011, SanDisk released a 64 GB microSDXC card. [37] Kingmax released a comparable product in 2011. [38]
CompactFlash IDE (ATA) emulation speed is usually specified in "x" ratings, e.g. 8x, 20x, 133x. This is the same system used for CD-ROMs and indicates the maximum transfer rate in the form of a multiplier based on the original audio CD data transfer rate, which is 150 kB/s.