1. [Widely compatible multi-function USB C hub]: USB-C expansion hub for M1 Mac, MacBook/MacBook Pro 2016 or later, MacBook Air 2018 or later, Google Chromebook Pixel, Huawei MateBook/MateBook Pro, Dell, Surface Book2/Pro7/Go, HP and Samsung S10, S10Plus, S9, S9 Plus, Note 10, Note 9, Huawei version mobile phones and other Type C laptops that support display Alt mode and power delivery. 2. [UHD 4K output]: Now you can mirror or extend your screen to bring you an unprecedented visual experience. You can easily transfer the screen directly to an HDTV, monitor or projector, greatly improving your work efficiency. It supports HDMI display up to 3840x2160@30Hz. 3. [3 USB ports for complete connectivity]: The USB hub is equipped with 2 USB 3.0 ports and 1 USB-C 3.0 port with transfer speeds up to 5Gbps. The USB ports can be used to connect USB peripherals such as flash drives, hard drives, keyboards, mice, printers, etc. 4. [90W PD power supply and ultra-high-speed data transfer]: The PD port on the hub supports up to 90W fast charging for laptops. Equipped with SD/TF dual USB 2.0 card reader, data transfer speeds up to 40Mb/s.