Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Piece of junk

Bought this thinking that it was pretty cheap for 1GB of storage. Everytime I've tried to use it past the first 3 times, it inevitably comes up with an error that files are write-protected. Tried to format the thing and can't even do that as the OS says it can't format a write-protected device. This has been the case on 6 different machines (laptop, desktop & Mac). It's essentially trash at this point. If you're looking to buy this, DON'T! It's a waste of your money.