Share what's on your tablet, laptop, or smartphone on an HDTV or monitor with the Microsoft Wireless Display Adapter. Stream movies, view personal photos, or display a presentation on a big screen - all wirelessly. It uses Miracast technology, so you're not limited to certain apps or content streaming; you can display everything from your device. Just plug the USB and HDMI from the Wireless Display Adapter into your HDTV or monitor, connect, then mirror or extend your screen and enjoy. 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.