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USB 3,0 only USB 2,0 speed


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#1 jackcapt

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Posted 12 May 2016 - 05:04 AM

Have 2 1t WD 3,0 hardrive`s, 1 500G WD 3,0 hardrive, 1 Toshiba 1t 3,0 og 1 1t Seagate 3,0. Highest speed have been 65 mbs and average 30 MBs, I have test them at the same time, even With same cable. My computer is a brand New Acer and the newest hardrive is about 1 year old. There should be a mutch higher speed With USB 3,0. I have try to search on net, but could not find some reasonable answer. Thanks in advance for some help



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#2 Humannpower

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Posted 12 May 2016 - 07:29 AM

I've run into this problem on a couple of computers at work and it seems uninstalling and reinstalling the USB drives does the trick. I recommend switching to a PS/2 Mouse and keyboard when doing this if you're on a desktop.



#3 bludgard

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Posted 13 May 2016 - 12:17 PM

@ jackcapt:

Confirm that USB 3.0 controller is enabled in BIOS and then try to transfer a large, contiguous (2-3GB) file (ISO or compressed archive) from one 3.0 drive to another 3.0 drive. See if read/write speeds differ.






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