Double C 8 IN 2 USB C Hub: Built with aluminum alloy case, specially accessory designed for MacBook Pro 2020/2019/2018/2017/2016, MacBook Air 2018/2019/2020; Easily fulfill your daily use by extending two USB C port to 4K HDMI,Thunderbolt 3 port(100W PD),USB C female port,Gigabit Ethernet,1 * USB 3.0 ports,1 * USB 2.0 ports,SD/Micro SD card readers. Notice: Won’t Work with Laptop Cases 4K Video HD Output Adapter: Mirror or extend the display of your MacBook Pro to your TV, monitor or projector in up to 4K UHD (3840 x 2160 @ 30Hz) resolution through the HD output port. Backward support 2K / 1080p / 720p / 480p / 360p resolutions. Support converting DP to HDMI 2.0 function USB 3.0 & 2.0 Ports & USB3.0 Card Reader: One super speed usb 3.0 ports (transfer data up to 5Gbps),support usb flash driver, usb hard disks. And one USB 2.0 allows you to connect keyboard or mouse without any lag. Built in SD and TF slots easily access files from universal SD card and Micro SD card; Support 2 cards reading simultaneously. USB C SD card reader transfers data with highest speed up to 104MB/S, sharing all your interests on your social network freely. Dual USB C Female Port: One is original Thunderbolt 3 Port supports data transfer up to 40Gb/s, up to 5K displays, up to 100W power; Another usbc port is USB3.0 data transfer port (speed up to 5.0 Gbps), and easily connect smartphones, tablet, hard drives for effortless data transfer with USB-C port USB C to RJ45 Gigabit Ethernet : The USB C to ethernet port support 10/100/1000BASE-T Lan networks, just plug in an ethernet cable, you can enjoy the ultra-fast gigabit ethernet speeds and the reliability of a wired connection directly. Worry-free about about wifi's instability and interference from USB 3.0