SanDisk 32GB 3-Pack Ultra USB 3.0 Flash Drive 32GB (Pack of 3) - SDCZ48-032G-GAM46T

Dont know how they work (I am a senior citizen). All of this technology is beyond me but....these tiny devices work as advertised and I am happy.

I use one of these to transfer files between 2 laptops. A second one has portable apps on it so I can use it with several desktop and laptop PCs. The third one has Ubuntu Linux on it that I used to install on a couple of laptop and desktop PCs. All have worked well. I recommend these.

Nothing new here, just the results of my initial tests. TL;DR: Seems genuine, no bad sectors. Only 460GB, not for people in a hurry. Verify a SuperSpeed connection. lsusb -v shows: ------------------------------------------- idVendor 0x0781 SanDisk Corp. idProduct 0x5581 Ultra iProduct 2 SanDisk 3.2Gen1 ------------------------------------------- One USB 3 hub detected this as HighSpeed and another SuperSpeed. Not sure why, but USB 3 hubs always surprise me. The disk came FAT 32 formatted, with 3 useless files (I don;t do Windows or Mac): -rwxr-xr-x 1 root root 707152 Sep 23 2021 Install SanDisk Software.exe -rwxr-xr-x 1 root root 552605 Sep 23 2021 Install SanDisk Software.dmg -rwxr-xr-x 1 root root 300509 Sep 23 2021 SanDisk Software.pdf I use the Fight Flash Fraud (F3) software to verify my flash devices. This one checked out well: ------------- ~ # f3probe /dev/sdc F3 probe 8.0 Copyright (C) 2010 Digirati Internet LTDA. This is free software; see the source for copying conditions. [...] Good news: The device `/dev/sdc is the real thing Device geometry: *Usable* size: 460.27 GB (965246976 blocks) Announced size: 460.27 GB (965246976 blocks) Module: 512.00 GB (2^39 Bytes) Approximate cache size: 0.00 Byte (0 blocks), need-reset=no Physical block size: 512.00 Byte (2^9 Bytes) Probe time: 257 ------------------------------------- As others noted, this only has 460GB usable. Deceptive marketing. I had not noticed the device was running as HighSpeed, but as others have noted, when writing USB 2 and 3 are about the same. If took just over 9 hours to fill the thing! ---------------------------------------- ~ # f3write /mnt/usb [ ...] Average writing speed: 14.08 MB/s --------------------------------------- Reading it all back showed zero errors, but took almost 3 hours and 30 mins! --------------------------------------- Average reading speed: 36.37 MB/s --------------------------------------- So writing as SuperSpeed would not have gone faster. Moving it to a hub that detected this as SuperSpeed read it back in just under 53 min: --------------------------------------- Average reading speed: 149.60 MB/s --------------------------------------- The cheap thumbdrives keep calling me, and turn out to be junk. This is the real deal.

Very large storage in this flash drive.

I needed a large amount of SSD space and these are great for the job. Several friends bought one on my recommendation.

Works as expected, plain and simple. Having fully tested these USB 3.0 drives the best I could, I was able to identify one problem. An .mkv file over 6GB would receive an error, file too large... even though a few of the drives had nothing saved on them yet. Im not sure if thats a Microsoft issue or not. In any case, I would be willing to buy again if the need arises. Great price!

Unlike some other less-known brands usb flash drives, these work right out of the package with no bs hassles. They cost a little more, but you make up that amount instantly by not having to waste time screwing around trying to get them to work. Save yourself headaches and frustration, get these.

Portable and easy to use. Does get warm when using as per the reviews; not a big problem.

This drive is easy to use and easy to carry.

Everyone complains about the drive being a 512gb and only getting 460gbish from it. Im not a computer erudite or anything so I dont know why it loses so much space, but if your concerned about not having that extra amount of space, maybe you should move upto the 1tb size or considered a pocket hard drive instead . . .