Specification: USB C male: compatible with thunderboil 3, Make sure that the host USB-C port on your device complies with the USB3.0/3.1. HDMI: 4K * 2K(3840*2160)30HZ, downwards compatible with 1080P 720P etc. USB3.0: Connecting to keyboard, mouse, cooler. Hight speed USB3.0 transfer 5Gbps,Power supply up to 4.5W max. USB C PD port: Support max 87W power adapter. USB C Data transfer port: USB 2.0 480Mbps speed SD / TF card reader: SD and TF cards can work simultaneously, read and write speed depends on cards’ quality. RJ45: Max Ethernet speed: 100Mbps. Material: Aluminum alloy. Color: grey. - Compatibility: 1. Compatible with most laptops that support DP Alt Mode(Not a full list): for Mac - Book Air 2018/2019, Mac - Book Pro 2016/2017/2018/2019/2020, Mac - Book 12” 2017, for Huawei Mate - Book, Huawei Mate - Book X, Huawei Mate - Book X Pro, Mate - Book E, Xiaomi Mi Air 12.5”, Mi Air 13.3”, Xiaomi Mi Pro 15.6”, Mi Game Book for Asus U306, U321, U4100, ROG for Lenovo Yoga 5 Pro, Miix 720, Think - Pad_X1 Carbon2017 for HP Pavilion x2, Elite book folio G1 for Dell XPS13, XPS15 for Google Chrome - Book pixels, Pixel - Book Pen for Microsoft Surface Book 22. for Samsung Galaxy Tab S5e, and for Samsung Galaxy Tab S6, for Samsung Galaxy Tab S7, Samsung Galaxy Tab S7+ . 3. Compatible smart phones that support DP Alt Mode(Not a full list): For Samsung Galaxy Note 20/Note 20 Ultra/Note 10/Note 10+/Note 9/Note 8/S20/S20+/S20 Ultra/S10e/S10/S10+/S9/S9+/S8/S8+ Huawei Mate 30/Mate 30 Pro/Mate 20/Mate 20 Pro/Mate 20 X/Mate 10/Mate 10 Pro/P40/P40 Pro/P30/P30 Pro/P20/P20 Pro One - Plus 7/One - Plus 7 Pro/One - Plus 8/One - Plus 8 Pro OPPO RX17 Pro in Europe/Oppo Reno 5G For Microsoft Lumia 950/For Microsoft Lumia 950 XLPackage Includes: 1 * Docking Station