Mini Displayport to Dual HDMI Adapter: ***Attention: For Mac OS, it ONLY works in Mirror Mode, Can't extend two different Screen, due to Mac OS limitation(the monitor can only display the same image); MST Mode only for Windows. Connect device with Mini DisplayPort port[Thunderbolt 2 Compatible] to two external monitors with 4K HDMI input, you can enjoy movies with your families on external ultra HD big screen,or works on multi screens Dual 4K HDMI Output: Loryi MDP to Dual HDMI Adapter allows you to connect two HDMI displays to your system via a single Mini DisplayPort 1.2 output, display resolution max up to 4K, functioning in mirror mode, extended mode, or as an extended mode combining multiple screens into one. Note: MST technology only works on Windows, not supported in Mac OS/iPad OS/Chrome OS, and using it with Mac OS will result in two mirrored displays instead of two independent displays Universal Compatible: Such MDP to HDMI splitter compatible with PC, laptops, desktops, or graphic cards that have Mini DisplayPort or [Thunderbolt 2 Compatible] output ports, and any monitor/TV/projector with HDMI input. To display a 4K resolution the host's graphics processor and attached HDMI display need to be 4K capable. Note:This adapter is not bidirectional and will not convert video from HDMI to mini DP display Dual 4K Vivid 3D Effect Video Sync: This mini displayport to dual hdmi adapter resolution up to 4K(3840X2160P@60HZ), dual monitor with HDMI at 3840x2160@30Hz, backward compatible with lower reolutions. (Important: ONLY when your devices also support 4K resolution, the video output will be 4K) IMPORTANT NOTE:1. The micro USB power cable must be connected to power the adapter itself, otherwise it won't work. The cable is included.2.If you encounter display issues, please update your computer's drivers and system. *Do not connect to other docks or hubs. When the Screen Cannot Be Extended：1. On Mac OS, this product cannot achieve extension mode and only supports mirror (duplicate) mode.2. Some older integrated graphics cards cannot achieve extension mode. Please confirm whether your device’s graphics card supports extension mode before purchasing.3. Please make sure to update your system and drivers. Mini Displayport to Dual HDMI Adapter: ***Attention: For Mac OS, it ONLY works in Mirror Mode, Can't extend two different Screen, due to Mac OS limitation(the monitor can only display the same image); MST Mode only for Windows. Connect device with Mini DisplayPort port[Thunderbolt 2 Compatible] to two external monitors with 4K HDMI input, you can enjoy movies with your families on external ultra HD big screen,or works on multi screens