I bought this on sale at Best Buy for $30.00 The information on the disk made it seem as though you could use it for software on different computers. I bought it for my Hallmark card software. Simplicity? I think not. With 4 GB of space I was sure that the card software would work from this drive. NOT. It seems that only U3 programs work with this so called "travel disk". Wish I'd never wasted my money on it. I wish I would have known about the U3 issue. I thought it was a 4 GB drive that I could use with ANY software. It hangs up my brand new VISTA computers (desktop AND laptop.