"USB Controller Upgrade" requires purchasing "Dance mat EX PRO + The Handbar", "Dance mat EX PRO 2 Metal Black", "Dance mat EX PRO 2 Metal White" or "Dance mat PIU EX PRO Metal 2". If you have previously purchased a required product, please log in to verify ownership and try again. Alternatively, get access to "USB Controller Upgrade" now by adding a required product to your cart.