I'm getting VERY slow transfer speeds with 3 different usb flash drives on different computers. This are the aspects I consider relevant:

  • USB 3.0 driver is installed
  • USB 3.0 is enabled from BIOS
  • Windows 8.1 as OS
  • USB 2.0 flash drives
  • USB legacy enabled and disabled (same result)
  • File size range from 50 mb to 200 mb
  • Flash drive formatted as FAT32 (16kB cluster)
  • Flash drive plugged to 3.0 and 2.0 ports (same result)
  • GA-Z170X-Gaming G1 motherboard
  • Intel core i7 4790K 4.0Ghz processor
  • Flash drive: Verbatim 32 gb 2.0

Now the awful: I'm getting 20 kB/s - 2mB/s Speeds. Most of the time 50kB/s

What is going on here!? I've tried EVERY SINGLE solution out there, and still. I need some external help here.

Another important aspect. All 3 of my flash drives were fine until I used them in my college lab computers. Those computers have Admin rights for engineers and I'm not sure if something such as a virus can damage an USB this way.

  • have you enabled the write cache in device manager? – magicandre1981 Apr 6 '16 at 15:52
  • Yes. Still, nothing. – AFP_555 Apr 7 '16 at 3:38

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