Product parameters: 1. Plug and play, without the need for additional drivers. When using the HDMI compatible interface alone, the resolution can reach 4K30HZ. 3. It can support simultaneous display of two HDMI interfaces. 4. Supports image extension mode. Mobile phones and Apple systems can only support AAA mode and ABB mode, while laptops on for Windows systems support AAA mode, ABB mode, and ABC mode. 5. Only compatible with devices that support DP Alt Mode protocol, true TYPE-C 3.1 interface, type-c interface on mobile and laptop devices must support both charging and audio and video data transmission protocols. 6. It can provide power supply for mobile phones and laptops, and USB 3.0 data transmission. 7. The aluminum alloy shell is durable and has a smooth appearance design that is corrosion-resistant. The aluminum shell provides better heat dissipation and better signal performance for you. 8. Compatibility: 1. Compatible smartphones that support DP Alt mode (incomplete list): Suitable for Samsung Galaxy Note 10/Note 10+/Note 9/Note 8/S10e/S10/S10+/S9/S9+/S8/S8+ Applicable to Huawei Mate 30/Mate 30 Pro/Mate 20 Pro/Mate 20 X/Mate 10/Mate 10 Pro/P30 Pro/P20 Pro For OnePlus 7/OnePlus 7 Pro for OPPO RX17 Pro/Oppo Reno 5G for Europe For Microsoft Lumia 950/For Microsoft Lumia 950 XL 2. Suitable for iPad Pro 11 inches (2018), for iPad Pro 12.9 inches (2018), for Samsung Galaxy Tab S5e, and for Samsung Galaxy Tab S6. 3. Compatible with Type-C laptops that support DP Alt mode (incomplete list): For MacBook Pro 2016/2017/2018/2019, MacBook Air 2018/2019 Suitable for Huawei MateBook, MateBook X, MateBook E, Honor Magic Suitable for Xiaomi Air 12.5 "/13.3", Mi Pro 15.6 ", Mi Game Book For Asus U306.U321.U4100.R0G Suitable for Lenovo Yoga5 Pro, ThinkPad_X1, Carbon2017, Mix 720 For HP Pavilion x2, Elite Book Folio G1 For Dell XPS13, XPS15 For Google Chromebook pixels, PixelBook Pen For Microsoft Surface Book 2 Packaging includes 1 * Expansion dock Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.