EASTFUN 5Pcs 8GB USB Flash Drive USB 2.0 Flash Memory Stick Thumb Stick Pen(Five Mixed Colors: Blue Purple Rose Green Gold)

I like em.... if you dont lose the cap.

I use these for my embroidery business. Ive tried dozens of brands. This is the only one that works %100 and also fast. Many brands dont work. Those that do respond very slow. These are the fastest and most reliable. Saves me hours of wait time a month waiting for designs to load. I know my situation is a unique one but wow finally after years of searching I finally found a usb drive thats perfect for embroidery work.

Works perfect for music in car, easy to transfer and just good buy

I needed flash drives for large-file photos and these are perfect. I also ordered the short wrist cords to attach to them and they are great!

Making family family albums.

These are exactly what youd expect. I purchased them 2 times, and tested several of each batch. Pretty extensive testing (blanking drive, reformatting, filling with small files, erasing, reformatting, flashing whole drive images, repeat several times). They all passed. They are not fast: in image writing/reading mode average speed is 7MB/s writing, 20MB/s reading. But that is not a concern for me as I use them mainly as boot drives for embedded devices.

All I needed was some quick portable storage to transfer files. These USB drives stopped working after only a few uses. Other similar drives Ive used have worked for years. I got a partial refund but these are garbage. Not worth the time or money.

Quality product at a great price

I was looking for cheap usb drives that I wouldnt use more than 4GB each on for various boot utilities, installations, and flashing of firmware. Of course theres always the problem of fake usb drives where the actual space is smaller than indicated and you simply start overwriting data if you exceed the real space. These use Chipsbanks CBM2199a which is a pretty new flash controller and the memory reported as ECD7947E64C4 - Samsung K9HDGY8U5B - 4CE/Single Channel [MLC-8K] I ran them through a 3 pass low level factory format using UMPtool and they are all really 16GB (ish). Benchmark show they are below but close enough to the performance of a Sandisk Cruzer Glide (16GB usb 2.0). However the random write performance is pretty bad. You can compensate for this with disk caching in Windows. Below are the benchmark results. Overall they are 5 stars because the price is great , they arent fake, and the performance is mostly ok. USB Drive formatted as extfat with the default cluster allocation size of 4KB Using a USB 3.2 gen 1 port (5gbit) AMD controller , Windows 10, latest drivers Benchmark Tool Crystal Disk Mark - 1 pass 128MB file Eastfun [Read] Sequential 1MiB (Q= 8, T= 1): 20.090 MB/s [ 19.2 IOPS] Sequential 1MiB (Q= 1, T= 1): 20.106 MB/s [ 19.2 IOPS] Random 4KiB (Q= 32, T=16): 11.748 MB/s [ 2868.2 IOPS] Random 4KiB (Q= 1, T= 1): 11.418 MB/s [ 2787.6 IOPS] [Write] Sequential 1MiB (Q= 8, T= 1): 5.868 MB/s [ 5.6 IOPS] Sequential 1MiB (Q= 1, T= 1): 6.690 MB/s [ 6.4 IOPS] Random 4KiB (Q= 32, T=16): 0.003 MB/s [ 0.7 IOPS] Random 4KiB (Q= 1, T= 1): 0.008 MB/s [ 2.0 IOPS] Sandisk Cruzer Glide 16GB (Usb 2.0) [Read] Sequential 1MiB (Q= 8, T= 1): 25.301 MB/s [ 24.1 IOPS] Sequential 1MiB (Q= 1, T= 1): 25.985 MB/s [ 24.8 IOPS] Random 4KiB (Q= 32, T=16): 6.950 MB/s [ 1696.8 IOPS] Random 4KiB (Q= 1, T= 1): 6.048 MB/s [ 1476.6 IOPS] [Write] Sequential 1MiB (Q= 8, T= 1): 6.285 MB/s [ 6.0 IOPS] Sequential 1MiB (Q= 1, T= 1): 7.125 MB/s [ 6.8 IOPS] Random 4KiB (Q= 32, T=16): 2.950 MB/s [ 720.2 IOPS]

I bought these to use for sending tax files to preparer (who can then keep them), for bringing my teaching files back and forth from university, and for transfer of files from an old and new computer. All 5 of the ones I received worked fine. I dont know if I would use them for important longer term backup duty - but for this price and the way they have worked so far - if you want a way to give files to someone and not have to remind them to give it back, or want temporary portable storage where you wont feel that bad if you lose them or they break, then I think these are great.