Review on EATOP 512GB USB3.0 Flash Drive - Dark Green, Compatible with 📱 iPhone, Android, Computers - External Storage Memory Stick Thumb Drive Photo Stick by Ryan Reed

After approximately 80GB of movies were transferred to the drive, later movies would not play, effectively limiting the usable size to less than 20% of capacity. Previously copied movies played normally. At one point the slider that pushed the FireWire connection worked, but the USB connection hung. There was no visible damage and I didn't push the slider on the USB side when deciding to return the goods. By the way, the same problem as with another large capacity (1TB) flash drive, but in this case I managed to talk to tech support and they agreed that one of them was defective. I haven't had a chance to speak to tech support about this.