at
Writing speed: 3.63 MByte/s
seem to be slow
Second generation
Modern flash drives have USB 2.0 connectivity. However, they do not currently use the full 480 Mbit/s (60MB/s) which the USB 2.0 Hi-Speed specification supports because of technical limitations inherent in NAND flash. The fastest drives currently available use a dual channel controller, although they still fall considerably short of the transfer rate possible from a current generation hard disk, or the maximum high speed USB throughput.
File transfer speeds vary considerably and should be checked before purchase. Speeds may be given in Mbyte per second, Mbit per second or optical drive multipliers such as "180X" (180 times 150 KiB per second). Typical fast drives claim to read at up to 30 megabytes/s (MB/s) and write at about half that speed. This is about 20 times faster than older "USB full speed" devices which are limited to a maximum speed of 12 Mbit/s (1.5 MB/s).
can you see how they make money by not providing the full speed

USB 2.0 can 480 Mbit/s (60MB/s) but, why its only writing at 3.63 MByte/s, i think they knowingly limit the transfare rate so they can milk more money by increase of speed every year, you know every year they upgrade the speed, just like hard drive storage