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goatfog
Paper Tape
Posts: 5
Registered: ‎01-23-2017
Location: NO
Views: 1,173
Message 1 of 5

Lenovp z50-75: slow usb transfer speed

Hi,

 

In the last few days I've been having an annoying problem when I try to transfer large files to my usb 3.0. flash drive. The flash drive is inserted into the laptop's 3.0. socket, but still the transfer speed is around 1 mb/s or less. It usually starts out fast (40 mb/s), then it grinds to a halt. Last night it took me 2 hours to transfer 8 GB to a 32 GB flash drive. I've tried three different flash drives, and also formatted one of them - nothing helps.

 

I've searched everywhere for a solution to this problem and nothing has helped so far. I even contacted Microsoft Windows support, who suggested that the fault is probably due to a driver which has been updated lately by Lenovo (I believe there was an update a few days ago). I've tried searching for usb drivers at Lenovo, but the search function here hasn't been helpful.

 

Can anyone help me out or point me to any drivers I could downloand to fix this problem? (I'm not a tech-savvy guy so if there are any other solutions or steps I have to take, please explain them to me like I'm a five year old.

 

Laptop: Lenovo z50, Operating system: windows 10 (64 bit), Machine Type: 80EC.

 

Retired Support Specialist
Posts: 291
Registered: ‎01-16-2017
Location: GB
Views: 1,084
Message 2 of 5

Re: Lenovp z50-75: slow usb transfer speed

Hi goatfog,

 

Thanks for posting and welcome to the forum!

 

How long does the transfer speed stay at 40mb/s before dropping down to 1mb/s? I can't find any USB drivers for your unit, have you looked to see if you can update the driver through the Device Manager?

 

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goatfog
Paper Tape
Posts: 5
Registered: ‎01-23-2017
Location: NO
Views: 1,078
Message 3 of 5

Re: Lenovp z50-75: slow usb transfer speed

Hi Ryan-X, thanks for getting back to me.

As of now a transfer no longer starts at 40 mb/s. It starts at around 4 mb and then drops down to 700 or 355 and 0 b/s and goes up and down from there.

I'm transferring a 2 GB file now, which is estimated to take 9 minutes.

Unfortunately Device manager tells me that I have the best driver software for all usb ports.
goatfog
Paper Tape
Posts: 5
Registered: ‎01-23-2017
Location: NO
Views: 1,050
Message 4 of 5

Re: Lenovp z50-75: slow usb transfer speed

Just bumping to see if anyone has any solutions to this. Thanks in advance.

eyegor
What's DOS?
Posts: 1
Registered: ‎03-30-2019
Location: UA
Views: 388
Message 5 of 5

Re: Lenovp z50-75: slow usb transfer speed

Hello. I have a same problem. Laptop Ideapad 530S-14IKB

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