Plugable USB 3.0 to HDMI 4K UHD (Ultra-High-Definition) Video Graphics Adapter for Multiple Monitors up to 3840x2160 (Supports Windows 10, 8.1, 8, 7) Connect multiple monitors with resolutions as high as 3840x2160 (4K) to Windows-based laptops or desktops (one adapter required per monitor). Highest performance USB graphics solution available. Combines both video and stereo audio over a single USB cable and HDMI cable Supports HDMI displays up to 3840x2160@30Hz and 3440x1440@50Hz. 2560x1600, 2560x1440, 1080P and lower modes will refresh at 60Hz. Note: A "High-Speed" HDMI 1.4 compliant cable is required for proper operation at modes above 1080P Connects to Windows PCs via USB 3.0. USB bus powered (no additional power adapter required). Adapter is backwards compatible with USB 2.0, but performance via USB 2.0 will likely be unsatisfactory Supports Windows 10 / 8.1 / 7. Surface RT, Mac OS X, and Linux/Unix are not supported. Not recommended for 3D gaming. HDMI to DisplayPort and dual-link DVI converstion not supported. (If you wish to connect a DisplayPort display, our UGA-4KDP adapter has native DisplayPort output) We love our Plugable products, and hope you will too. All of our products are backed with a 1 year limited parts and labor warranty as well as Seattle-based email support Compatible with Windows 10, 8.1/8, 7. (Drivers can be automatically installed via Windows Update or downloaded directly from Plugable.) Supports monitors/projectors and PC-compatible TVs up to 3840x2160@30Hz refresh rate. Compatible with HDMI displays. Requires Intel / AMD / Nvidia main GPU and up-to-date WDDM-compliant drivers for best perfromance and compatibility. Current USB drivers are suggested for best perfromance and compatibility. Suggested for use with web/productivity software; not recommended for gaming. Mac OS X, Linux/Unix not supported. HDMI output only; cannot be converted to DisplayPort or dual-link DVI. Not recommended for gaming. Does not support HDCP, and will not allow for playback of encrypted Bluray disks or copy-protected content. Cannot be mixed with non-DisplayLink USB graphics adapters and drivers (e.g. MCT, j5, or SMSC).