More Than 360 Days Product and Technical Support: You get more than HDMI splitter for dual monitors, you also have 60 days to try out and 12 month's product and technical support, and our friendly and easy-to-reach customer service always here for you. Stable Transmission And Driver Free: Loryi multi display adapter for laptop built with one-piece Alumium Alloy shell, matte black finish, classical, luxury and durable, each port is gold-plated to ensure stable signal trsnsmission, plug and play, instantly turn your laptop, tablet, or phone’s USB-C port into dual HDMI ports, with no installation necessary, suitable for home and office use. Wide Compatibility: NOT for all USB-C port laptop, make sure your host device's C port supports video output or DP Alt Mode. This dual HDMI adapter for 2 monitors works well with Thunderbolt 3/4 compatible devices, such as MacBook/MacBook Pro2020 2019 2018 2017, MacBook Air2020-2018, iPad Pro 2018, Dell XPS13/15, Galaxy S9/S9+, etc. Multi Monitor HDMI Adapter On Windows: Our HDMI splitter extended display support devices with USB Type C (thunderbolt 3/4 compatible) port to two external monitors to enjoy movies, games with your families on external ultra HD big screen, perfect for expand the screen and multitasking. Windows OS supports both SST and MST mode, but on Mac OS, the SST mode is difference from Windows, you can see the same conment on 2 external monitors, but different with laptop. Dual 4K Vivid 3D Effect Video Sync: Loryi USB C to dual HDMI adapter resolution up to 4K(3840X2160P@60Hz), and backward compatible with 1080P@60Hz, when dual HDMI work, HDMI only can be up to 3840x2160@30Hz. With this high-performance dual hdmi adapter when you play games the screen without any millisecond delay. ONLY when your devices support 4K resolution, the video output will be 4K, please make sure to use a HDMI 2.0 cable or better.