SanDisk 256GB Ultra Fit USB 3.1 Flash Drive - SDCZ430-256G-G46, Black

Worked instantly out of the box. It wanted me to download some sketchy Mac software but it works perfectly without it.

I purchased the USB in February 2019 and it failed in Nov 2019, ten months hmmm. From new it required far more pressure to insert then my other USB drives and the housing became noticeably warm when in use. At that point, I should have sent it back but instead dismissed it as the consequence of its small architecture and poor manufacturing tolerances. After less than fifty applications the housing broke but more annoying the stored data became unrecoverable. I have several full size SanDisk and other maker USB drives and none have exhibited the above noted concerns or failures. Unfortunately four days ago my wife purchased the SanDisk 256 model and it also requires more insertion force than should be required, foreshadowing dear reader. Would I recommend this product? Absolutely not. Will I continue future Sandisk purchases? Probably, but not their miniature series. SanDisk, if you wish to offer me recompense, I will gladly include your response as an appendix to my review. Cheers E Update: Nov 25, 2019 The day after submitting my Amazon review I contacted the SanDisk warranty department by email requesting recompense as the USB was less than 5 years old. I provided them a copy of my Amazon purchase order and the next day I received a follow-up email from SanDisk® Global Customer Care stating SanDisk did not have a 128gb replacement in stock (in the warehouse) but would I settle for two 64gb instead to which I replied, yes. Within a day or two I received another SanDisk email this time different in tone. It referenced my Amazon.com review and included the following highlighted in blue, Note: Refurbished, physically damaged or non-authentic products are not covered by SanDisk warranty. The email also included an RMA (Return to Merchant Authorization) but no mention of the previous replacement offer. So what happened, a SanDisk employee armed with my Amazon purchase receipt trolled the Amazon.com website and located my review. Upon reading it they identified I had mentioned the USB casing had broken and presto SanDisk feels the warranty claim is disqualified, hence the blue highlighted script. To appear as a good corporate citizen they now offer me an RMA (Return to Manufacturer Authorization) so we can go through the process. Okay I will, with the clear understanding that I intend publish every SanDisk response regardless of the outcome. Other critical Amazon reviews about this product identify similar concerns, it runs hotter than a full sized USB, it is a tight fit especially in USB 3.0 ports, the housing cracks and this device prematurely ends in software/hardware failure. See a similar Amazon.com posted review provided by Gennaro M. on March 15, 2018. It is one of the many provided by dissatisfied consumers. My complaint, like those generated before me, does not originate from consumer misuse, abuse or accident but by product failure and warranty issues. Stay tuned for SanDisks response which I intend to publish when I receive it. Cheers E On 2019.11.27, I received the following email from James P.. a SanDisk® Global Customer Care rep, Thank you for writing back to us. Please be informed that the statement which was sent in the e-mail is a standard statement which we use in all automated RMA approval e-mail for letting customers know that Refurbished, physically damaged or non-authentic products are not covered by SanDisk warranty. Also we understand that you are not very satisfied with the model of flash drive which you were using earlier i.e. SanDisk® Ultra Fit USB 3.1. Therefore we would like to offer you an alternative product i.e. SanDisk® Cruzer Glide USB 3.0 128GB (SDCZ600-128G) in replacement. Please suggest if you are agreed for the alternative model. I agreed to accept their offer and on 2019.12.10 I received without cost to me a full size USB SanDisk® Cruzer Glide USB 3.0 128GB (SDCZ600-128G) delivered to my door. In the end SanDisk® or the parent company Western Digital Technologies Inc honored the warranty. I will continue to use SanDisk® as long as the honor they warranty. However I would not again purchase or recommend this specific product the SanDisk® Ultra Fit USB 3.1. cheers e.

Not sure if its normal, but this dongle heats a lot on files copy. Its also way smaller than it feels on the photos. So the best way to attach it to some key ring or something.

Best deal I ever had. Cheaper than Micro-sd, 50MB/s, as small as Bluetooth dongle, so I can keep it in laptop all the time. Wish I found this product earlier. On inner side of package it had activation code for 1 year “RescueProDeluxe”, you can restore deleted documents with it (Works better if you don’t filled any extra data after deleting) Also comes with pre-installed SanDiskSecureAccess Valut, where it can store even 256/256gb of my drive forever, no subscription. Opens only with passcode!

Purchased two of these 512GB Ultra Fit USB 3.1 Flash Drive. Unpackaged both USB Drives and added them to my laptop. BOTH DRIVE SPACE ONLY = 460GB each!!!! << NOT EVEN CLOSE >> NO ADDED SOFTWARE ->> >>> 52GB SHORT per-USB Drive. -- TOTAL LOST Drive space = 104GB. You need to do better SanDisk!

I am amazed that I can load so much into such a small item-I will be buying more in the future

This thing is small, so it is easy to miss. (would be nice if it come with a yam loop for holding for that reason.) For the same token its good to use as extended storage for tablet (which is expansive to get more storage) by taping it to the USB port. Its small physical size and smooth shape makes it extend out very little and not noticeable. (Cheap way to get Surface pro storage increased by 512MB!) Wish they would have USB-C version also

Like the large storage capacity. Outer plastic case cracked and now is broke. Still works but plastic case falls off. Metal would be better but probably would increase the manufacturing cost.

Very good addition to my backup tools.

I will preface this by saying that I had to order a replacement right away as my first one showed up melted inside the packaging to where it wouldnt even fit into a USB port if I would try. My second one showed up and seemed to be in perfect condition, so I got to using it right away. Formatting took a strangely long time, using default settings. I thought nothing of it at first blaming windows. Creating a folder on the device locked up my windows explorer for about 10 seconds which raised suspicions, but blamed the OS again. Then transferring files from one device to another took significantly longer than many other flash drives I have. I tested it on my android device, another PC, and even a PS4. This thing is just very slow when making any changes to the contents of the device. Reading performs well enough, but certainly slower than others I have. Even moving files from one folder to another within the drive takes a few seconds to even start the operation. All in all, it works. Maybe I just have bad luck with these, but if thats all you need, this is okay. If you need better perfomance out of a low profile USB drive, get a Samsung Fit. Those work without any of theissues mentioned above.