KOOTION 10 Pack 4GB Flash Drive 4gb USB 2.0 Flash Drives USB Drive Jump Drive Bulk Thumb Drive Swivel Memory Stick Black

*Every* drive from this purchase failed with unrecoverable sectors on Windows 7, Windows 10, and Mint v21. None of the drives presented errors when they were reformatted (variously to FAT32, exFAT32, and/or NTFS), but all of them failed when trying to read data of various sizes. The drives responded at extremely slow speeds, seemingly slower than USB 1 speeds; I couldnt tell if this was error recovery attempts or just the drive being absurdly slow. (And frankly didnt want to invest any more of my time in investigating...) TL;DR: Dont waste your money on these drives - theyre not worth the cost even if they were given away for free, as they dont reliably store data.

Ive purchased these several times and they work great - no issues. Im cheap and while I dont like the slow USB 2.0 writing speed, theyre perfect for my needs.

Easy to use, very portable, makes a nice gift if you are giving perhaps a slideshow or pictures to someone, they can plug it into their computer or television to view. 2.0 is a little slow on the download but if that is not a problem then this is a good buy.

So far 2 would not hold 2 GB

I have a need to store a few ISO images for server build. This is a good value for a fast flash drive to install OS on servers for my home network. I have used 8 of them so far and they all work well installing OS to servers and computers. Not to worry about the reliability as this is just a portable way to install OS.

You will be sorry if you buy from this company. Over half of the USBs will not format correctly and have to be thrown away. Huge waste of time and expense. DO NOT BUY!!!!!

I use these everyday in doing CM Consulting Business

Not my favorite form factor for a flash drive, I like a snap on cap, but I knew that going in, so no complaints. Having had problems with flash drives in the past I did a disk check on all 10, then a quick format just to make sure they would work on my system and they came out gold, no issues. At this price when Ive giving someone pictures or whatever, I can just give them a flash drive, not burn a bunch of CDs or a few DVDs and hope they have a optical drive. Im cheap, but for $2.50 each I can give them away. Only reservation is there was no speed class noted like there usually is with SD cards so I dont know if theyre fast or slow.

Order shipped fast and is exactly as described. I have more than enough storage for my files now! I haven’t run into any issues, and I recommend this product to those who are looking for a good set of USB drives.

I needed Low capacity drives for compatability with usb 2.0 devices. i tested these and yes these are fast usb 3.1 and have 16gb. Authentic -get what you pay for. i copied 16Gb at 20MB/s -reads at 120MB. fast read speeds to play 4k video from. photo of test results attached. good product for cheap affordable price and performance. although i hate the swing type handle. i knew what i was buying and i got exactly what was advertised.