USB 3.0 to Dual HDMI Adapter External Video Supports Windows Only - Feature:HIGH RESOLUTION SUPPORT: Add astonishing picture quality through the USB 3.0 port of your computer by adding support for video resolutions of up to 4K at 30Hz.NO POWER SUPPLY NEEDED: Connect the 4K UHD dual monitor adapter directly to your computer without the need for an additional power supply. WINDOWS ONLY: This USB 3.0 to Dual HDMI Adapter is only compatible with Windows operating systems and does not support mac-book devices. SpecificationSupport Windows 7 or 8 or 8.1 or 10, XP (32bit), Vista (32bit) Mac OS,Support 1 USB input interfaceSupport 1 channel 3.5mm stereo outputSupport 2 HDMI output interfacesOutput resolution up to1920x1080p 60HzSupports USB3.0 and USB2.0 interfacesMaterial MetalProduct size60x15x175mmPackage:1X Adapter 1X Manual