CyberDe@th

SteveSi - Can you write some more about this?

Sorry for refreshing quite old thread, but I've got similar problem. I've bought three SanDisk Extreme USB 3.0 32GB at once in one shop. It looks, that at least one of them works good and one needs to be disconnected and connected again. I haven't tested the third one, yet. I'll update my post later after making more tests. For now I can only say that they have different boxes and numbers on them. UPDATE 1: The BAD SanDisk Extreme USB 3.0 32GB: Box: It has note on the front of the box in the top-right corner: 2GB FREE online storage. It has been made in 2012. Date is visible on the back of the box in the bottom-center: 2012 SanDisk. Address of the company: 601 McCarthy Blvd., Milpitas, CA 95035. Pendrive: There is only one visible difference and I think that is model number: BM121223463B. It's seen as Removable Media in USB Prep Tool. The GOOD SanDisk Extreme USB 3.0 32GB: Box: It doesn't have any note in the top-right corner on the front. There is only empty space. It has been made in 2013. Date is visible on the back of the box in the bottom-center: 2013 SanDisk. Address of the company: 951 SanDisk Dr., Milpitas, CA 95035. Pendrive: Model number: BM130223463B. It's seen as External hard disk media in USB Prep Tool. I hope that this will help someone in the future.