02-14-2017 08:20 AM
I believe the concern is the laptop USB port it is connected to as well as the data in it.
Replacement only cover the USB Flash Drive, not the data neither the laptop USB port (if it is damaged due to overheat from the USB Flash Drive).
While other manufacturer also does not provide any warranty to cover the data (in case of loss) neither the USB port of any laptop, however, the USB Flash Drive from other manufacturer does not operate under that high temperature (at least the temperature of the touchable surface of the USB Flash Drive).
The workaround is to use extension cable, but other's opinion is also valid as like why should I buy a tiny USB Flash Drive but end up with attaching an extra USB cable? It against the tiny design!
02-14-2017 11:38 AM - edited 02-14-2017 11:39 AM
So, its been a while, and I'd like to comment back on this USB. I've had it for over a year, run several Linux distros on it, and currently use it to store ROMs/Kernels/Flashables for my Nexus and Galaxy phones- in short, it works great as small expandable storage.
As a USB 2.0 device, that is. I'm highly disappointed in the heat department when used as a 3.0 device, but for such a small USB and form factor I'm not surprised. When I need to get stuff done, 3.0 does the job but man, the heat is insane.
So overall, for the $11 I spent for this little guy I'm satisfied. I think Sandisk ought to inform customers, however, as there are many people in this thread who haven't had nearly as rosy an experience as I.
08-25-2017 04:42 AM
i would like to share my experience with Ultra Fit 3.0-16GB.I've used it in my Sony Car Audio System. But after few months i've found the heating issue. It became so hot just few minutes after inserting that couldn't be touched on the metallic portion.Few months later it started showing problems like, the flash drive is undetectable after getting heated just after inserting it. It becomes a useless one. SanDisk should solve the problem or stop selling this product.
12-05-2017 05:18 PM - edited 12-05-2017 05:23 PM
Well, well, well. Yet another long-running thread about an unresolveable problem...
I went through the 'write-protect' saga with the Cruzer Blades. I still maintain they're good little drives for the price, as long as you don't try to use them to extremes.
As for the Ultra Fits.....yeah, the little buggers do run hot, it's true. But even in a USB 2.0 port, the transfer speed is nothing short of astonishing. And in a USB 3.0, it climbs into the stratosphere.....
I've got 2 of the 32 GB models. I've got at least 3, if not 4, of the 64 GB models. And in the last year, I've splashed out on 3 of the 128 GB jobs, too. (These latter three are formatted to ext3; one is used as a miniature NAS in our router, and the other two are used as permanent 'external storage' in a 15-yr old Dell Inspiron laptop running 'Puppy' Linux. They're not used for system stuff - although Pup's mode of operation keeps system read/writes to an absolute minimum anyway (it's one of these distros that runs totally in RAM, and only writes config/settings to the flash drive periodically) - but simply for data storage, to supplement the 64GB SSD 'upgrade' that hosts Pup itself.
I've tried these in FAT; ex-FAT, and also NTFS, in addition to Linux formats. Even BTRFS. Doesn't matter what format you run 'em under, they will get very hot. One of the other posters, several pages back, hit it on the head when he/she stated about the laws of physics prevailing; cramming an enormous number of transistors into a teeny space, the heat produced has got to go somewhere. And in this case it's the miniscule metal shell.....which, let's be fair about this, does do its best to try and dissipate that heat, despite having its work cut out from the 'get-go'!
The QC guys must have determined these weren't going to get hot enough to cause major problems.....although joeydee's pictures don't exactly inspire confidence, do they???
(I also have a Cruzer 'Fit' (the 16 GB model)......which runs as cool as a cucumber. Through I would dispute that those tiny 'cut-outs' have got very much to do with it.....it's simply due to a much lower transistor count.)
The news about the far higher power-draw is enlightening, too..... And a printed warning on the packaging that heat production may occur regularly would go a long way to help matters.....bearing in mind that high transistor count AND the astonishing performance.
Ah, well. Carry on regardless!
04-04-2018 10:22 PM - edited 04-04-2018 10:23 PM
I'm running both the original 128GB Ultra Fit(s) and the new 256GB Ultra Fit(s). Aside from the typical heat issue, I'm noticing dropped connections, particularly when using USB 3 transfer rates.
I've returned two of these for replacement and have RMAs in for another two.
05-01-2018 01:42 AM
I just found this thread, and while I've seen my Ultra Fit getting quite hot in the past, it seemed to work mostly fine nevertheless.
However, having just found it about its torn pin (as I posted in http://forums.sandisk.com/t5/All-SanDisk-USB-Flash-Drives/Ultra-Fit-not-working-is-the-4th-USB-3-0-p...), I wonder if any of you has a similar issue? I had never noticed it before, so I wonder if it could be related.
12-07-2018 03:32 PM
Have six of them. Using 16 and 32 GB versions.
Holding three of them in 3.0 slots in my motherboard from 2015 to date of this post. Almost never removing them. They work well.
One is plugged into 3.0 slot in my Monitor. One is in Raspberry Pi 3 B+, one in Car radio.
ALL OF THEM ARE HEATING SO BADLY! But I don't know if that heating affects performance, except that one in my car.
I only experience problem with that one which is in my car. Only in heat in summer. When air is very hot.
Radio's USB port is getting so hot and music is stopping playing. Need to plug device out and wait until is cool.
But they are still working fine.
I Googled this topic because I was really confused after all these years of usage.
This is what I can share with you. Cheers
12-11-2018 11:03 AM
well you guys been lucky here..i once needed to remove my computer case and remove flash drive cuse it got melted into usb port and got stuck there.used screw driver and brute force to push it out.
got both agter cleaning with 90% alchool what is meant for cleaning for electronics(like thermal paste).
02-17-2019 11:57 AM
My 2nd Sandisk Ultra Fit 128GB 3.1 has now also failed after 3 months with a write protection error and also got extremely hot, even when using a short usb extension cable, as I didn’t want it melting my Nvidia shield tv usb ports. When are Sandisk going to acknowledge that there is a problem with these usb heaters, sorry I mean sticks.
07-11-2019 07:40 AM
July 2019. I've just fitted a 128GB Dual Drive to a Samsung Galaxy S9 Plus using the USB Type-C power/data connector port.
Within 5-10 minutes, the Dual Drive became so hot that I had to protect my hands to remove it.
My thinking is that Samsung have not provided any power regulation to protect peripheral devices from receiving too much power from the 3500mAh battery fitted in this 2018 design smartphone.
A quick look at Sandisk's Dual Drive "compatibility" list -- at http://www.sandisk.com/dualdrive-c -- only lists older smartphones, which had lower mAh batteries. And I doubt very much that Samsung considered 'regression testing' of the Type-C USB port for peripheral power compatibility when they released their newer, higher power battery, 2018-19 smartphones.
I've submitted an alert to Sandisk and, to their credit, they've escalated my report, and are currently investigating the issue.
Meanwhile, if anyone has the appropriate electronics skills, it'd be interesting to measure the Amps power being output by older smartphones versus 2018-19 phones with significantly higher capacity batteries.