Windows Anytime Upgrade (WAU) - Windows 7 Home Premium to Windows 7 Ultimate Upgrade. This is a boxed, fully packaged product that contains paper instructions and a key code ONLY, no CD/DVD is enclosed. This WAU is used to go from a Windows 7 Home Premium OS to Windows 7 Ultimate. The enclosed key code unlocks the chosen version of Windows 7 and since this is considered a license product, no returns are allowed.