09-08-2019 06:35 PM
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.
10-11-2019 10:51 AM
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.
03-19-2020 08:51 PM
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.
04-23-2020 09:45 AM - edited 04-23-2020 09:58 AM
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 !!
04-30-2020 11:15 AM
Sandisk have a problem with their usb 3 implementation. They have had this problem for at least 5 years judging by this forum.
They offered me a swap for an Ultra Flair. But I am reading that they too get too hot to touch!
I am using the Ultra Fit 64GB on a short extension lead It runs a bit slower but it won't cook the laptop port.
I also have a 64GB Ultra Dual Drive usb 3 which is actually faster than the Ultra Fit and is tollerably hot. The much larger plastic body could be the reason?
Other brands of usb 3 flash drive dont have this heat problem. Why are Sandisk not addressing it?
05-17-2020 08:47 PM - edited 05-17-2020 08:48 PM
I currently own 4 Sandisk flash drives, all of them are Dual (3 x micro USB and 1 x USB C) with capacities of '32', 64, 128, 128, respectively. All of them are bare, the plastic housing just stopped working because of the fragility of the connection between the plastic housing and the tiny piece of plastic on the metal frame, so I had to strip them down. Because of this I am constantly burning my fingers when I remove them from either the USB hub or the PC.
I think it is high time Sandisk addressed this problem and need to go back to the drawing borad to engineer a usable, stronger device.
P.S. I am about 90% sure that the 32 GB is a Sandisk. If it isn't then Sandisk isn't the only company with this problem.
05-26-2020 11:51 AM
Yes it appears that only Sandisk have an overheating problem with their USB 3 flash drives.
Their USB 2 flash drives are fine.
This issue has gone on for at least 5 years and they have done nothing about it.
I have a 3" USB extension lead which I always use with the Ultra Fit. It slows it down a bit, but it won't destroy my laptops USB 3 port.