Microsoft Wireless Display Adapter CG4-00001 System Requirements: Computer/Operating System All Miracast enabled Windows 8.1 tablets/laptops/phones and Android devices with 4.2.1 and later. Internet access not required for use. Note: ensure the latest Windows updates are installed Miracast enabled Android devices 4.2.1 and later* * Full functionality not available with non HDCP devices. If a device was originally pre-installed with a prior version of Windows (Windows 8, Win7, Vista or XP), please contact the OEM (original equipment manufacturer) to confirm if it is Miracast enabled. ** Not compatible with Surface RT