I transferred a 1.66 Gb file to this flashdrive, it took 7:35.40. That's 3.65 Mbps. An USB 3 write speed range 10 to 45 Mbps. I brought a 128 Gb. This is not a USB 3

Beware: fake capacity * not usb 3.0

Sadly i bought several at once before testing just one. Worst flash drive i have ever bought on aliexpress (or anywhere). These drives are supposed to be 128gb and are actually about 90gb-95gb (tested with validrive). What's worse is the performance is horrible. On one of the drives a 1.6gb file took 10 minutes to transfer. Plus it's unsafe to write data to fake drives because you may lose data to some of the bad (fake) sectors. Speeds are below (much worse than) usb 2.0.

Sad that these are fake drives, because the outer shell build quality is very nice.

I tested four drives. All are fake and not usb 3.0.

Fake capacity and not usb 3.0 speeds.

Very disappointed in this product. Incredibly slow speeds (as slow or slower than usb 2.0).

Tested with validrive and found that each 128gb drive only has a little over 90gb of good sectors to write to. In order to actually use the drive without an issue of corrupted data, you'd need to map out the bad sectors before using it.

Avoid this scam.

Fast shipping, good product but not tested yet. I recommend this seller to everyone. 👍 😄

Instead of 128GB, it was about 4GB of actual capacity. And the flash and/or controller is so bad that even if the interface really does support USB 3.0, the real-world speeds don't reach USB 1.1. Write speeds are awful, and the drive is barely usable for prolonged operation.