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kjh
Newbie
Posts: 3
Registered: ‎03-23-2016

Re: Ultra Fit USB 3.0: Excessive Heat

Can anyone verify for me if there is any potential for this drive to damage USB ports?

 

We purchased (6) 64 gb drives to transfer data from our inspection trucks to our office computer daily.  The amount of data varies from 500 mb to 20 gb daily per drive.  The data is mostly wmv, jpeg, pdf, and mdb files.

 

We noticed immediately the heat issue and weren't initially concerned, because who really cares if it just gets hot.  However, we did become concerned when nearly every USB port these drives have been plugged into have failed.  

 

The computers are all relatively new, I7 @ 4.0 ghz, 16gb Ram, 64 bit Windows 7.

 

The USB ports have failed to the point that the computer doesn't even recognize when something is plugged in, it dings, but nothing else happens.  

 

If I plug one of these Ultra Fits into a working USB port, a message appears telling me that this drive has issues and must be scanned (which always results in nothing).

 

Can anyone tell me what the hell is wrong with these things?  Do I need to throw them in the trash where they belong?  Or will Sandisk replace them with units that don't suck?  

 

To be honest, I'm leaning towards trashing them, I have had more customers complain about the reports we deliver on Sandisk drives than any other brand...

 

 

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

Re: Ultra Fit USB 3.0: Excessive Heat

Or will Sandisk replace them with units that don't suck?  

 

That's the plan.

 

http://kb.sandisk.com/app/answers/detail/a_id/5232/~/return-material-authorization-(rma)-process

 

 

Ed
Important files = Backed up files
Newbie
Posts: 10
Registered: ‎02-05-2016

Re: Ultra Fit USB 3.0: Excessive Heat

@kjh I guess everyone's experience is different. I can say that I've used the ultrafit on my laptop and raspberry pi (continuous use) without any problems. Yes it does get hot, but its within design specs. The USB ports should not have been damaged by this heat. Of course if you could prove that the heat is outside typical USB design specs, then you would have a case.

 

I don't see why Sandisk has to replace them since they dont "suck" in the first place. They're tiny so they're hot, get over it.

kjh
Newbie
Posts: 3
Registered: ‎03-23-2016

Re: Ultra Fit USB 3.0: Excessive Heat

[ Edited ]

 

So you admit that these things suck...  Why would I want a direct replacement?  This **Removed** is going in the trash.  

 

Btw, I am surprised at the level of **Removed** you Sandisk representatives have.  

 

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slotmonsta

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

Re: Ultra Fit USB 3.0: Excessive Heat

1.) No one replying in this thread is a SanDisk employee or representative; only users like (or maybe not) yourself.

 

2.) I can't see where anyone replying has admitted that these drives are categorically defective.

 

3.) There really is no need for the vulgarity in your reply.

kjh
Newbie
Posts: 3
Registered: ‎03-23-2016

Re: Ultra Fit USB 3.0: Excessive Heat

[ Edited ]

You guys have thousands of posts on a forum for flash drives and don't actually work for Sandisk?  

Newbie
Posts: 10
Registered: ‎02-05-2016

Re: Ultra Fit USB 3.0: Excessive Heat

@kjh.. if you can't speak in a civilized fashion, it's best that you don't. No-one here is a sandisk employee. And there is no fndamental problem with the drives. If you have an issue, write a letter to sandisk rather than ranting here about non-existant problems please. Let's move on.

Newbie
Posts: 6
Registered: ‎03-31-2016

Re: Ultra Fit USB 3.0: Excessive Heat

Hi guys, recently purchased the 16GB version of the Ultra Fit.

 

The reason this device is overheating is due to power draw via the USB 3.0 interface. I ran CrystalDiskMark with this drive sitting on a USB 3.0 port, and then a 2.0 port (both connected to motherboard on laptop).

 

When hooked up to USB 3.0 the Ultra Fit got ridiculously hot, to the point at which it felt like the end of a hot glue gun. When connected to USB 2.0 it was STILL HOT but tolerable.

 

Scores for USB 3.0:

Sequential Read  125.685 MB/s
Sequential Write 34.706 MB/s
Random Read 4KiB  : 5.780 MB/s
Random Write 4KiB  : 1.553 MB/s

 

Scores for USB 2.0:

Sequential Read : 41.072 MB/s
Sequential Write  : 25.743 MB/s
Random Read 4KiB : 5.357 MB/s
Random Write 4KiB  : 1.712 MB/s

 

 

According to the scores it appears that on USB 2 the drive takes a massive hit on Reading, but Writing and 4K R/W is actually fairly similar. THIS IS DUE TO THE POWER DRAW. 

 

Therefore, I would use USB 2.0 if transferring large files- the transfer rate will be slower but heat will be tolerable. For small files transferring via USB 3.0 would be far quicker, though less safe.

 

Its a brutal shame that SanDisk markets a drive for USB 3 that can pretty much be only be safely used with USB 2.0. SanDisk needs to find a balance between the two.

 

SanDisk User
Posts: 44
Registered: ‎03-16-2015

Re: Ultra Fit USB 3.0: Excessive Heat

So SanDisk quietly updated the models with what appears to be a small incredmental upgrade, but no changes to the physical body. Any idea if this is to address the heat issue?

 

I have severl 128gb UltraFit models and I generally have to use them at USB 2 speeds. I've always been under the impression that SD cards can function just fine with extreme heat, but USB flash drives do not have nearly as much thermal resistance due to differences in the controller.

 

From a design perspective, SanDisk should have used aluminum...this would make a huge difference in regards to internal temperature.

Newbie
Posts: 8
Registered: ‎03-25-2008

Re: Ultra Fit USB 3.0: Excessive Heat

[ Edited ]

> ZapNZs wrote:

> So SanDisk quietly updated the models with what appears to be a small incredmental upgrade, but no changes to the

> physical body. Any idea if this is to address the heat issue?

 

Guess not - I just got in a 128GB 150MBPS one and it overheated and did the repeated disconnect/reconnect thing when I tried to copy a folder of several GB to it Smiley Sad . I moved it to a USB2.0 port and so far it's only running stoopid hot but not flaking out. I only need it to hold some .wav files to play on my .wav only device and will rarely write to it so I can live with that. Definitly not usable on a USB3.0 port! I need the low profile so I can leave it inserted in my device - a "standard" sized one wouldn't work for me. I also have a 32GB one I bought a couple months back - I didn't notice any problem with that one.