Through the Windows device properties, we can see, this Yi Jie CM981 series 4GB flash drive is actually available capacity 3.71GB.
In order to increase compatibility, Yi Jie CM981 series 4GB flash drive factory default file system format is FAT32.
HD Tach is a commonly used memory test tools.
Yi Jie CM981 series 4GB flash drive read performance is better, the average read speed of 17.5MB / s; burst read speed of 18.4MB / s.
ATTO Disk Benchmark is an excellent and free disk benchmarking software, support for stability / sudden read and write transfer rate test, applied to conventional hard drives, RAID, USB flash drives, mobile memory card products, read and write performance test.
Pass the test can be seen, Yi Jie CM981 series 4GB flash drive read / write speeds are 18.7MB / s and 4.9MB / sec.
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