Frequently asked questions How to switch the M ac device to extended mode? "Settings" → "Display" → Click the "Mirror display" box to switch to extended mode → Then, you can drag the website/movie window to the far right of the desktop screen until it disappears on the desktop screen and appears on the External monitor screen. How to connect to the extended mode of W indows? Right-click on the desktop → select display settings → p op up the settings screen to select display → select multi-screen display → expand the desktop (if display 3 is not displayed, please manually select the display → click apply to confirm the setting can be confirmed). What if one of the displays does not display? Right-click on the desktop> Graphics Settings> Select one or more active displays. 1. Maximum 4K @ 60Hz output-when only one port is used, the maximum resolution is 3840x2160 @ 60Hz. To ensure 4K/60Hz performance, please make sure to use HDM I 2.0/DP 1.2 cable (or better), it also depends on the definition of the monitor. Support HDCP 2.2. Supports mirroring and extension modes of M acOS, WinOS and ChromeOS 2. Video and audio-transmit high-quality video and audio for presentations, meetings, workshops, training or games. You must confirm that your host device supports video output or DP Alt Mode. You may need to change the "Default Audio Output Device" setting in System Preferences to transmit sound 3. Humanized design-non-slip connector, easy to plug and unplug. Reinforced braided nylon cable, durable. The precise USB-C plug can be tightly inserted into your device for better signal transmission. Integrated aluminum alloy shell, better heat dissipation effect 4. Wide compatibility-2019/2018/2017/2016 new M acB ook Pro 13/15/16, new M ac Book Air, Ma cBook 12, new i P ad Pro 11/12.9, new iMa c/Pro, De ll XPS, Surface Book 2/Go, Sam sung Galaxy S8 / S9 / S10 / Plus / Note 8/9/10, Pixelbook, Chromebook, Intel NUC, HP, compatible with Acer, compatible with Lenovo and other products with USB-C DP ALT mode. 5. Dual 4K displays-enables full-featured Wind owsOS devices to display two split screens through an HD MI and an extended DisplayPort display (TV, projector, etc.), with a resolution of up to 3840x2160p @ 30Hz. (Important note: On M ac devices, due to the limitations of Ma cOS, these two monitors display the same screen (mirror screen)) USB-C to Dual HDMI Adapter 2 in 1: Attention: For Mac OS, it ONLY Mirror Mode, Can't extend two different Screen, due to Mac OS limitation; Connect device with USB Type C (tunderbolt 3) port to two external monitors with 4K HDMI output; You can enjoy movies,games with your families on external ultra HD big screen; Windows OS supports both SST and MST mode. Wide Compatibility: (Note: NOT for all USB-C port laptop, such as this adapter CANNOT work with HP Pavilion/compatible with Lenovo IdeaPad, You need to confirm that your host device's C port supports video output or DP Alt Mode, and you can normally see the DP-logo next to the port if this is the case, ).This HDMI Reader works well with Thunderbolt 3 compatible devices,such as MacBook/MacBook Pro2020 2019 2018 2017,MacBook Air2020-2018,compatible with iPad Pro 2018 ,compatible with Dell XPS13/15,compatible with Samsung Galaxy S9/S9+,etc Vivid 3D Effect Video Sync: This usb c to hdmi adapter resolution up to 4K(3840X2160P@60HZ), dual monitor with HDMI at 3840x2160@30Hz; Dual monitor USB C adapter also support 1440p and 1080p at 60Hz offered by the DisplayPort MST technology; with this high-performance USB-C adapter when you play games the screen without any millisecond delay. (Important: 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.) Hassle-Free Setup: Multi-stream transport offers an easy setup by natively working on device that supports DP Alt Mode over USB Type-C; plug-and-play, no drivers or software required. (NOTED:Please connect the monitor (HDMI port) first, then the laptop (usb c port), You may need to change the settings of "the default audio output device" on system preferences to deliver sound.) What you get a: 1* USB Type C Adapter, 1* User Manual.