This means that with Windows 8 and Windows 7, the Compatibility Center site is now the largest database to check if products you already own or thinking on buying are compatible with Surface and other Windows PC form factors (desktop, laptop, Ultrabook, and tablets). Also according to Steven Sinofsky, president of the Windows division, Windows RT is compatible with more than 420 millions already available hardware products. To use this database, simply follow this link and do a search for the product you are interested, but only make sure that at the top-right corner of the screen the operating system is set to Windows RT and not Windows 8 or Windows 7. Source Neowin All content on this site is provided with no warranties, express or implied. Use any information at your own risk. Always backup of your device and files before making any changes. Privacy policy info.