
The first one I tried to write a file to was so slow that I ended up ejecting it, restarting my computer and reformatting the drive. But that didn't help much. From there I ran tests on all five. See attached graphs: I found that two drives clearly had problems (#1, #2), two worked but at less than half the speed of most USB 2.0 drives (#3, #4) , and only the last one (#5) lived up to expectations. I think there's a reason the price was so attractive. Two of them will go in the basket today, maybe more will follow later.

32GB SanDisk USB Flash Drive (SDCZ430-032G-A46)
78 Review

Titan Gray Samsung BAR Plus 256GB USB 3.1 Flash Drive (MUF-256BE4/AM) with Up to 400MB/s Transfer Speed
69 Review

Kingston DataTraveler flash drive 100 G3 256 GB, 1 pc. black
74 Review

Sandisk Ultra Flair 128 GB Silver USB Flash Drive: Reliable and High-Speed Storage
65 Review

2 TB External HDD ADATA DashDrive Durable HD650, USB 3.2 Gen 1, Blue
55 Review

Shock-Resistant Transcend StoreJet 25M3 USB 3.1 Slim Portable Hard Drive with 500GB Capacity
99 Review

🔜 Seagate Backup Plus Slim STHN2000400 2TB Portable Hard Drive - Black: Your Reliable External Storage Solution
93 Review

8TB Seagate Backup Plus Hub Desktop Hard Drive with Data Recovery Services
56 Review