I have been trying/experimenting with creating standalone media with different brands of keys trying to determine what works and what doesn't. My method of testing is to try to build a key on a windows 7 workstation and then on a windows xp workstation. Does anyone know of a list of brands and models of keys that have been proven to work? On the keys that refuse to work, I've cleaned them with diskpart but still no go! I need to figure out what to get our purchasing agent to order! We ordered several thousand dollars worth of the Verbatim's, but sent them back since they don't want to work :( . Works so far: Lexar 16 GB Firefly.Kingston 32 gig Data Traveler.Kingston 16 GB G2 USB 3.0 Does NOT work, ( and I don't know why it refuses to work!) Verbatim 16 GB Store n Go Thank you for any advice, hope everyone had a great 3 day weekend!