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Newbie
Posts: 1
Registered: ‎09-08-2019

Re: Ultra Fit USB 3.0: Excessive Heat

I believe you will find that it isn't poor design, but rather that the Ultra Fit are USB 3.0, whereas the Cruiser Fit is only 2.0.  USB 3.0 uses more power, but it still doesn't seem as if they should get that hot.  I have the same problem, and perhaps it is a design flaw, but we can't compare it with the Cruiser Fit, because one of almost 10-times faster in file transfer speed than the other.

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Newbie
Posts: 1
Registered: ‎10-11-2019

Re: Ultra Fit USB 3.0: Excessive Heat

I recently bought one SanDisk Ultra 128 GB dual OTG Flash drive, with a C type connector on one side & a standard USB connector on the other side. It's capable of USB 3.0 speed.

When connected to my Samsung S8 mobile using its type C connector, the flash drive was getting very hot within a short time. I use it to play music (wav files) & it started to heat up even before the first song ends. By 10 minutes, it used to become so hot that I could not touch it without being burnt.

So, I returned it & got a new one but again the same problem.

This time, I connected to the mobile using the standard USB connector on the flash drive & a type C adapter that came with the Samsung S8. Lo & behold, there was absolutely no heating problem whatsoever even after playing for hours.

Does this mean that the problem is with the C connector?

Users of this flash drive, please give me your feedback.
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Newbie
Posts: 3
Registered: ‎03-19-2020

Re: Ultra Fit USB 3.0: Excessive Heat

I have similar hot USB experience. I used a new SanDisk Ultra Flair 128GB to be connected permanently to a TP-Link Router (Archer A9 AC1900). The router is scheduled by a power socket timer to power off at night & on in the morning. Every morning, about 1 hour after the power on (without manually accessing any data on the usb), the 128GB usb become obviously hot (not just a little warm). And then if I unplug & re-plug it physically, the hot vanish quickly and it won't become hot again even after several hours. (I tried safe-remove from the TP-Link software-wise, without unplug, but that won't stop the flash hot). This experiment have repeated for 4+ days, and the result is the same. I tried another brand's USB flash, it doesn't become hot if it is plugged in before the router re-power-on. Thus, it seems there is a hardware design flaw in the SanDisk flash hardware controller.
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Newbie
Posts: 3
Registered: ‎03-19-2020

Re: Ultra Fit USB 3.0: Excessive Heat

Supplementary info: My 128GB USB is quite new (second half of 2019) and light-use, and I haven't re-formatted it.
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Newbie
Posts: 3
Registered: ‎03-19-2020

Re: Ultra Fit USB 3.0: Excessive Heat

Additional info: the TP-link router port is a USB 2.0 port.