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

Kootion 16 GB USB 3.0 Flash Drive 16gb Flash Drives 10pcs For the ones that are working...not bad, I like them. Pretty good generic little flash drives for the price. Out of the ten in the pack two of the drives failed to show any storage available, one refused to do anything at all (even light up) and two failed and fully corrupted/became unusable when formatting. -----Diagnostics + Chip info----- I used DISKPART to clean and format each one, FakeFlashTest and H2TESTW to verify actual storage and CrystalDiskMark to verify speeds. They each have exactly 15.357951 GB in MAX usable capacity when unpartitioned CrystalDiskMark results are as follows: [Read] Sequential 1MiB (Q= 8, T= 1): 143.088 MB/s [ 136.5 IOPS] < 58203.57 us> Sequential 1MiB (Q= 1, T= 1): 144.075 MB/s [ 137.4 IOPS] < 7268.93 us> Random 4KiB (Q= 32, T=16): 17.548 MB/s [ 4284.2 IOPS] <117249.22 us> Random 4KiB (Q= 1, T= 1): 11.249 MB/s [ 2746.3 IOPS] < 363.68 us> [Write] Sequential 1MiB (Q= 8, T= 1): 51.128 MB/s [ 48.8 IOPS] <135211.10 us> Sequential 1MiB (Q= 1, T= 1): 83.116 MB/s [ 79.3 IOPS] < 12406.85 us> Random 4KiB (Q= 32, T=16): 1.001 MB/s [ 244.4 IOPS] <326764.32 us> Random 4KiB (Q= 1, T= 1): 1.672 MB/s [ 408.2 IOPS] < 2398.55 us> Uses a SM3281 Drive Controller. Im unable to identify the flash memory chip. Protocol Version: USB 3.10 Current Speed: High Speed Max Current: 504mA USB Device ID: VID = 090C PID = 2000 Device Vendor/Manufacturer: SMI Corporation Device Name: USB DISK Device Revision: 1100

We have been using these flash drives for several years, and I rarely have an issues. Occasionally there will be one that just doesnt want to show on the computer, but it doesnt happen often. We order roughly 250+ a year, so I will take 1-3 flash drives that dont work over the course of a few years.

I really like the price and the ability to choose colors. I only needed less than 1Gb, so the 4Gb was plenty. I use them for an organization that has a CD of content to share, but since so many personal computers no days dont have CD drive, we mainly produce flash drive versions. These really fit the bill. The package size of 10 works great for me, so that I can buy them just as needed. No complaints so far from our members or the general public who buys these with our content.

Does what it says.

One of the drives has a bad connection and keeps dropping out. The other drives work flawlessly, happy with the purchase. Good Value.

This was a good deal, they work great and seem to last as well.

Purchased this 10 pack as a pen testing solution. They are working so far, but writing to the product and conversion to bootable image drives was incredibly slow. Total write time for an image file (ISO) of 16GB was 32 minutes. Not great if you are in a hurry! Port used was USB 3.0, and this device is USB 2.0. This item was not up to the speed of the USB 2.0 spec, claiming up to 480MB/s. In my writing speed test, I wrote a 16gb ISO file. This took an incredibly long time, at an average write speed of 9.7MB/s. The speed decreased marginally, but steadily, as the write process continued. I might recommend for multiple smaller file solutions. Perhaps office documents to home, or schoolwork to home. In contrast, my tests say this product is not up to larger file work like ISO images.

So far they all work properly. No issues and decent price. Not the fastest drives but get the job done.

*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.

Especially when you need many, e.g., giving away, it is a best.