Reading speed approximately corresponds to the declared one and is about 130MB/s. Slow write speed (even on USB 3.1 port). At first, the buffer in RAM just fills up and it seems that the speed is good, but soon everything falls into place and the speed stabilizes at around 20 MB / s. I did not like the flimsy plastic USB connector, which bends from any contact with fingers, you need to use it very carefully. And finally, I was unpleasantly surprised that the sandisk company is deceiving users regarding the volume of their drives. Manufacturers consider 1 gigabyte for 1000000000 bytes, this is also indicated on the packaging of this drive. Well, we consider the real capacity with the declared 64GB. 64000000000/1024/1024/1024=59.6GB Instead of the declared 59.6 gigabytes, the capacity is 57.3 gigabytes. I checked my other flash drives and hard drives, everything corresponds to the declared volume, and sandisk did not report 2.3 gigabytes (about 4% of the capacity). Total 2 points for this flash drive. It would have been 3 if the volume had not been deceived.
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