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Newbie
Posts: 20
Registered: ‎10-18-2015

Re: Ultra Fit USB 3.0: Excessive Heat

I've got mine, a 64 GB Sandisk Ultra Fit 3.0 yesterday (SDCZ43).

 

Completely agree with others that this USB stick runs too hot! I also noticed that the performance dropped when it gets too hot and resume after several seconds passed.

 

I share the same concerns like others that this USB stick might somehow damage my USB 3.0 port.

 

I had the 16 GB Sandisk Cruzer Fit 2.0 and this one runs much cooler. Is it anything I can do to get rid of the heat issue rather than return it?

 

 

Newbie
Posts: 3
Registered: ‎10-26-2015

Re: Ultra Fit USB 3.0: Excessive Heat

same here, i bought 64 GB SanDisk Ultra Dual USB Drive 3.0, i just plugged-in only (both PC and my Android phone), not doing anything, then it gets very hot. Do you solution for this, @dromedary? i am afraid that i bought defect product. Can we get replacement for it? If you have, please share your solution.

thank you and best regards,
Gunawan Agung
Newbie
Posts: 20
Registered: ‎10-18-2015

Re: Ultra Fit USB 3.0: Excessive Heat

In addition, I measured the current drawn by the Ultra Fit USB 3.0, it is more than 4x higher than the current drawn by the Cruzer Fit USB 2.0.

 

Ultra Fit USB 3.0 = 896 mA

Cruzer Fit USB 2.0 = 200 mA

 

Could this be the reason of the overheat, considering the physical size is not much larger while the power has increased 4 times.

 

 

Newbie
Posts: 1
Registered: ‎10-28-2015

Re: Ultra Fit USB 3.0: Excessive Heat

Unbelieveable

 

The first answer from "Sandisk" is critisism towards a Sandisk user.

 

I plugged the drive in my computer and it got hot.

 

It got hot before I transfered anything to or from the drive.

 

The longest that I can touch the plugged in drive is 4 seconds before I have to pull my hand away.

 

I get the same result from USB2.0 ports, USB3 ports, and my MP3 player.

 

The flashdrive has a 5year garantee, but I assume that does not cover the equipment the dirve is plugged into...

 

SanDisk... your responses are aphauling, grabbing at anything the users say to shift the blame?

 

Cruser fit 8GB

SanDisk Guru
Posts: 2,408
Registered: ‎07-23-2010

Re: Ultra Fit USB 3.0: Excessive Heat

[ Edited ]

The first answer from "Sandisk" is critisism towards a Sandisk user.

 

Can you provide a link to the "first answer" your referring to?  Cause the first answer I see is mine and I don't see any critisism. 

 

And BTW this is a users forum, posters are people who use SanDisk products just like you do.

Ed
Important files = Backed up files
Newbie
Posts: 1
Registered: ‎10-29-2015

Re: Ultra Fit USB 3.0: Excessive Heat

[ Edited ]

Hi There,

 

Just to let you know, I have found that this disk overheats, and found many threads about it like this one, that's why I registered

 

My Cheap no-name USB 3.0 sustained 20MB/s with my test copying a movie file and a folder full of photos.

 

The SanDisk UltraFit starts at 90MB/s then all of a sudden drops to about 20MB/s for the rest of the transfer. I note if I pause the transfer for 10 seconds and then resume the speed ramps back up to 90MB/s and again drops off. I did this test many times, even trying different ports.

 

Really disappointed that my cheap USB stick is better overall than SanDisk. I was expecting that SanDisk was high quality but I am concerned that frequent use may end up doing some damage due to the heat problem. So after paying about 5 times the price of my cheapo USB I now have a dud product. Why should I have to wait for the SanDisk to cool down, I bought it for high speeds so I can get things done faster.

 

I'm sure many of you have seen this on their website:

 

 

So Small You Hardly Know It’s There. So Fast You Barely Have to Wait.

This ultra-small, low profile drive stays put for extra storage, or moves media super-fast between devices. Enjoy performance speeds up to ten times faster than USB 2.0 drives, transfer a full-length movie in less than 40 seconds.

 

ripped off

SanDisk Guru
Posts: 2,408
Registered: ‎07-23-2010

Re: Ultra Fit USB 3.0: Excessive Heat

Do the excessive heat posters use the drive's SecureAccess app on it?  I could see encrypting & decrypting large or many files on the drive being a load that could cause excessive heat.

Ed
Important files = Backed up files
Newbie
Posts: 20
Registered: ‎10-18-2015

Re: Ultra Fit USB 3.0: Excessive Heat

I did not use any encryption appl. Only a plain disk, formatted normally and written with normal copy from either Windows Explorer and Linux.

 

Even worse, without copying anything, the flashdisk also becomes hot by itself.

 

 

SanDisk Guru
Posts: 2,408
Registered: ‎07-23-2010

Re: Ultra Fit USB 3.0: Excessive Heat

formatted normally

 

So you are not using the USB drive with the factory format?  How did you reformat it and to what format?

Ed
Important files = Backed up files
Newbie
Posts: 20
Registered: ‎10-18-2015

Re: Ultra Fit USB 3.0: Excessive Heat

Nope. I never trust the factory format as they do mass production and it is understandable that some may be formatted not perfectly. I always reformat on my own computer to let the flashdisk formatted structure matches the computer format.

 

Format normally = insert the flashdisk to USB port, wait until it is recognized by Windows Explorer (i.e. assigned a drive letter). Then right-click the drive letter and select Format.