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USB 3.0 Port Very Slow

Last response: in Motherboards
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August 19, 2014 7:09:34 PM

Okay so I just got the Asus M5A97 LE R2.0. Whenever I try to transfer lots of data like 1-2 GB, it is very slow. I might get 800KB/s - 3MB/s on average. My case USB has a another USB which you route to the back of the motherboard. Both back and front USB 3.0 are very slow and this has always happened.

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a b V Motherboard
August 19, 2014 7:14:35 PM

The usb file read/write/transfer speed will only be as fast as the usb device you are using itself.
So a usb 2.0 pen drive plugged into a 3.0 port, will only perform as fast as the pen drive itself id capable of performing at, at the 2.0 speed. Also remember, all devices have different quality read/write speeds;

If i used my usb 3.0 pen drive in a 3.0 port, i'd get Read-73MB/s - Write-13MB/s
But plugged in a 2.0 port, it is Read-30MB/s - Write-9.8MB/s

Kingston DataTraveler R3.0 G2

Also, copying a folder of a hundred smaller files totalling 1GB would take far longer than a single item of 1GB, near half the speed
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August 19, 2014 7:22:27 PM

chris_shadez said:
The usb file read/write/transfer speed will only be as fast as the usb device you are using itself.
So a usb 2.0 pen drive plugged into a 3.0 port, will only perform as fast as the pen drive itself id capable of performing at, at the 2.0 speed. Also remember, all devices have different quality read/write speeds;

If i used my usb 3.0 pen drive in a 3.0 port, i'd get Read-73MB/s - Write-13MB/s
But plugged in a 2.0 port, it is Read-30MB/s - Write-9.8MB/s

Kingston DataTraveler R3.0 G2

Also, copying a folder of a hundred smaller files totalling 1GB would take far longer than a single item of 1GB, near half the speed


Ohhh. Thanks so much!
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a b V Motherboard
August 19, 2014 7:39:50 PM

No problem :)  just get usb 3.0 drives in your future purchases to achieve the speeds your motherboard was made for and check reviews of those drives to see what kind of read/write speed they are actually getting too, to know what to expect
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