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Newbie
Posts: 1
Registered: ‎12-23-2014

Ultra Fit USB 3.0: Excessive Heat

SDCZ43-064G-G46 / SDCZ43-032G-G46 / SDCZ43-016G-G46

 

I bought the 64GB Ultra Fit to use as extra storage for my Chromebook. After leaving the Ultra Fit in either the USB 2.0 or 3.0 slots for a mere 5 minutes it gets considerably hot. Even AFTER ejecting the drive and leaving it in it is still getting hot. In the 3.0 slot it gets so hot you don't want to hold it.

 

I'm wondering if this is due to the LED in the case that is constantly (24/7) blinking and drawing power? Maybe this was designed to only blink when read/write???

 

Anyone else having this issue or found a fix??? I'm concerned it's going to damage my chromebook and/or Ultra Fit.

SanDisk Guru
Posts: 2,404
Registered: ‎07-23-2010

Re: Ultra Fit USB 3.0: Excessive Heat

I'm concerned it's going to damage my chromebook and/or Ultra Fit.

 

Me too.  Don't use it.  Where did you buy it?  Can you return it to the seller?  If not return it to SanDisk.

Ed
Important files = Backed up files
SanDisk Professor
Posts: 544
Registered: ‎12-10-2014

Re: Ultra Fit USB 3.0: Excessive Heat

Hello,

 

as far as i could research the heating case for the ultra fit i found out that its becoming so hot because of the small size of the drive and that its not plastic.

 

You can ask sandisk what you can do to prevent this but as far as i know the drive is tested and its becoming slightly hotter that other usb drives but not so hot to damage the host or the drive itself.

Good Luck

#Missing the keyboard? Press F1 for help#
ssc
Newbie
Posts: 1
Registered: ‎02-09-2015

Re: Ultra Fit USB 3.0: Excessive Heat

Hi,

 

I found this same problem. And the main reason is that it poorly designed when compared with Cruzer Fit.

 

If you look closely Cruzer has 6 vents/cutouts in its sheet-metal. So it provides a better heat dissipation. Whereas Ultra Fit has none.

Now it is up to SanDisk folks if they want to fix this mistake.

 

Please see this link below for the image for such vents/cutouts. There are 2 on each side of the sheet-metal.

 

http://www.amazon.com/SanDisk-Cruzer-Low-Profile-Drive-SDCZ33-064G-B35/dp/B00FJRS6QY/ref=pd_sim_pc_2...

 

Regards.

 

SanDisk User
Posts: 66
Registered: ‎12-25-2014

Re: Ultra Fit USB 3.0: Excessive Heat

5 minutes is way too short to get those kind of temperature. 99% chance that it's a hardware issue and that's defective. I'd check the warranty on it as well.
Newbie
Posts: 2
Registered: ‎03-10-2015

Re: Ultra Fit USB 3.0: Excessive Heat

the level of overheat is ridiculous! this is a design issue for the ultra fit not a isolated heating problem with some units only.

 

Sandisk guys! Please respond with a satisfactory solution!

Newbie
Posts: 1
Registered: ‎03-11-2015

Re: Ultra Fit USB 3.0: Excessive Heat

In my computer's USB3, my receivers' (One Onkyo and the other a Denon) and my samsung Bluray I have noticed heat issues..

 

This concerns me.. My hope was to leave in a receiver for extended times to access my music but now think i cannot. Should I return to Amazon? just got it Monday...

Newbie
Posts: 1
Registered: ‎04-16-2015

Re: Ultra Fit USB 3.0: Excessive Heat

Bought three of these Sandisk Cruzer Fit 64GB USB3.0 drives recently and was horrified to see how hot they became when plugged into a USB3.0 socket - the metal parts of the stick were VERY hot after a few minutes operation. When I pulled one of these sticks out - my finger tip felt like it had touched the metal surface of a boiling kettle !!

 

Amazon reviews mentioning the temperature issue have met with a response from Sandisk representatives suggesting users wait at least 30 seconds before attempting to remove the stick - that is an admission of guilt in my book !!


I think these sticks really do have the potential to damage any socket they are plugged into, and there have been reports of plastics blistering on USB Hubs - I can quite believe it !

 

Furthermore, when I copied data from a nearly full Sandisk Cruzer Fit USB2.0 64GB stick to this new 64GB USB3.0 stick - there was not enough space !!! I then realised the newer 64GB USB3.0 sticks give you nearly 2GB LESS than the older 64GB USB2.0 sticks !!!!!

 

Using exFAT ...

 

The 64GB Cruzer Fit USB2.0 reports Capacity as 64,012,943,360 bytes
The 64GB Cruzer Fit USB3.0 reports Capacity as 62,171,119,616 bytes

 

With FAT32 the capacity points are slightly different BUT the discrepancy remains !!

 

How can Sandisk get away with this - even allowing for the industry norm of dividing by 1000 (and not the correct 1024) to convert from bytes, it's not even 64000 !!!


So, not only is the USB3.0 version capable of damaging the host machine by the temperatures it can reach BUT you also get shortchanged !

Newbie
Posts: 1
Registered: ‎09-08-2015

Re: Ultra Fit USB 3.0: Excessive Heat

Hi.

 

I know this is a rather old thread, but I wanted to post my experience with this device too, as it is a little different from yours (and nearly everyone).

 

I also noticed right after I plugged the flash drive (Ultra Fit 3.0 - 32 GB) for the first time that it got insanely hot, even after transfering files from or to the device and having it ejected. This happened in every port in my desktop computer, 2.0 and 3.0. However, I brought the flash drive to work this morning and transfered over 25 GB to my work desktop (2.0 ports only). It took about 8 minutes to do it and it didn't even get a little warm, nothing, which suggests that the problem has something to do with the ports the flash drive is connected to, and not only the the drive itself.

Does you drive get hot everytime or it depends on which port it's connected to?

Newbie
Posts: 1
Registered: ‎09-09-2015

Re: Ultra Fit USB 3.0: Excessive Heat

I've tried different Macs (not tried a PC yet) and different USB3.0 hubs (non powered) and it still gets RED hot.

 

So Hot, I've stopped using it.