JOIOT 16GB USB 3.0 Flash Drive Thumb Drive Jump Drive with LED for Fold Data Storage, Memory Stick, Zip Drives, Pen Drive - Black (4-Pack)

I'm a photographer/videographer who uses these USBs to give clients their digital images and I never had any problems with them.For very large files the USB need to be formatted to exfat. These come with smaller containers like most USBs so very large files won't fit without the USBs being formatted.

These work great and load fast. IF I had a complaint, it would be that they don't stay shut. There's no notch or anything to hold them in the closed position -- they can freely rotate. But I don't carry them around on a lanyard or anything, so it's OK.

Great for the price! Strangely enough, it wouldn't work through a USB hub (I only tried one, to be fair).EDIT: It now works through that USB hub, probably just a user error...

Dead on arrival. Bought a pack of 4. None were recognized by my Mac or by my windows virtual machine. Returning the item.

Really, REALLY slow! Seems like it starts writing quickly but then slows to a snail's pace after about 10 min or when the drive is about half full. Then it's like one picture per 5 sec-10 sec...not great when trying to transfer 6,000 photos at about 13 gb. I wonder if there's a problem with writing speed slowing as they heat up. Takes well over an hour to fill the drive. I wouldn't purchase these again.

One of my favorite amazon items - always good I've bought at least 12 boxes of these and continue to buy them. Never a bad unit in the box. Just a solid dependable product at a fair price.

Needed flash drives to put pictures on for family and these were cheap and worked great.

They work fine and the price is right. Discovered they have a small red light at the opposite end of the plug.