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Newbie
Posts: 7
Registered: ‎04-05-2008

Re: Ultra Fit USB 3.0: Excessive Heat

Just ordered the 128GB and probably should not have.

 

What was the Sandisk response to you?

Newbie
Posts: 2
Registered: ‎10-17-2015

Re: Ultra Fit USB 3.0: Excessive Heat

I just RMA'd my SanDisk 128GB a month ago because it would drop-out after about 3 or 4 GB into a file transfer. It only did this when plugged into a USB 3.0, which led me to conclude that it was an overheating issue caused by the higher performance of the drive when plugged into a USB 3.0 port. I could copy over 60GB in one go over USB 2.0 however.

 

Anyway, got my RMA back the other day. Same issue unfortunately. I got a great deal on this drive though (only paid like $15), but if I paid any more I think I'd be asking for a subsitution from SanDisk, i.e. one of their other equal or greater performing 128GB drives.

 

Definately a lemon this series of Ultra Fits. My last 64GB version had all sorts of issues as well, which SanDisk replaced with 2x 32GB sticks. No technical issues with the 32GB stick, but the keychain holder did break on one of them; yet another design flaw of the Ultra Fit.

Newbie
Posts: 2
Registered: ‎01-10-2016

Re: Ultra Fit USB 3.0: Excessive Heat

+1. I bought the SanDisk Ultra Fit 128GB USB 3.0 Flash Drive (SDCZ43-128G-G46) from Amazon, drive disconnects when file copied longer than 1 minutes and very hot even when idle.

Smiley Sad

Newbie
Posts: 1
Registered: ‎01-12-2016

Re: Ultra Fit USB 3.0: Excessive Heat

So i just decided to make an account here to post my personal experience and thoughts. I just received the 128GB Ultra Fit from amazon, and am also experiencing some heat issues, although they are only mild so far compared to others. I am running the Fit in a 3.0 port on my macbook pro trying to get a time machine backup. 8GB transferred so far, touching it every minute or so to verify it isn't about to "melt" and it seems that if you touch it like so, the heat will dissipate into your finger allowing it to stay somewhat normal in regards to temperature. So with that little technique, no issues so far, but will keep monitoring to make sure nothing happens.

Newbie
Posts: 2
Registered: ‎01-26-2016

Re: Ultra Fit USB 3.0: Excessive Heat

Been trying to transfer whole images (5 GB plus) to my fit 128's, and it throttles back the speed, then the drive winks out. I click continue after a cool down and it will continue.  After 4 times, Windows has had enough and thinks the drive is defective, and I start all over. It's writing to the drive that makes it hot as it uses heat to write the bits to the chip. With USB 3.0 speed, I can see why. From now on, it's drives with all metal chassis.

SanDisk Guru
Posts: 16,060
Registered: ‎04-17-2008

Re: Ultra Fit USB 3.0: Excessive Heat

[ Edited ]

N7OKN wrote:

Been trying to transfer whole images (5 GB plus) to my fit 128's, and it throttles back the speed, then the drive winks out.


 

I don't believe Windows will transfer any single files over 4GB.

 

http://www.winability.com/why-cant-i-copy-large-files-over-4gb-to-my-usb-flash-drive/

Newbie
Posts: 2
Registered: ‎01-26-2016

Re: Ultra Fit USB 3.0: Excessive Heat

[ Edited ]

Yea, you're right, that's why I format my thumb drives with NTFS.  

 

I have no way to break up the images, so I have NTFS bootable. Yea.. actually made that happen but it wasn't easy.  I know more heat writing to the thumb drive with NTFS, but no image restore capability without it.  

 

That's why I have metal case thumb drives on the way now. Also the thin plastic key chain loop broke on it. That's my 2nd one. If you keep your Ultra fit on a key chain, you're asking for it to be put through the wash. That's what happened to mine.

SanDisk Guru
Posts: 2,383
Registered: ‎07-23-2010

Re: Ultra Fit USB 3.0: Excessive Heat

[ Edited ]

I don't believe Windows will transfer any single files over 4GB.

 

True, but the solution for removable drives is not NTFS, it's exFAT.  No journaling, less overhead, less heat. And the format the drive comes with.  Did you try transferring your 5GB file before formating the drive?

 

As for booting a removable drive check out the Easy2Boot app.  http://www.easy2boot.com/

Ed
Important files = Backed up files
Newbie
Posts: 3
Registered: ‎01-27-2016

Re: Ultra Fit USB 3.0: Excessive Heat

Hi all,

 

I registerd here just to express that I am completely disappointed by this flash drive.

I was trying to copy a 9GB file to the flash drive - and it kept disconnecting because of overheat after ~7GB of transfer.

After each failure I was waiting for it to cool down. from the 4th try I managed to copy that file, but after I disconnected the drive - it is not detected anymore in OS. So it died completely (I tried several other PCs as well).

 

Why to manufacture a product which fails its primary purpose - file transfer??

Newbie
Posts: 20
Registered: ‎10-18-2015

Re: Ultra Fit USB 3.0: Excessive Heat

@artci: I completely agree with you. I have been a fan of Sandisk for CF, SD and now USB stick. Sandisk never let me down until this Ultra Fit, which completely changed my impression about Sandisk.

 

My opinion is, this is a defect product. And after many complaints in this "Sandisk forum", seems like we are talking to the wall.

 

Regardless the theory that cramming a high speed chip into a tiny form factor will definitely produce heat, but this fails the main purpose (copying files). If Sandisk cannot produce a decent product in this form factor, they shouldn't at the first place.

 

I own both. The Cruzer Fit is still fine, while Ultra Fit is not.

 

Maybe a campaign against Ultra Fit will draw Sandisk's attention?