Designed for Surface Pro 7: Turns the USB-A connection and USB C into 6 ports (HDMI 4K/30Hz, 100M Ethernet LAN，USB-C Port(Data Transfer), 2 x USB-A, SD Card Reader). Note 1: This surface pro dock won't fit your surface very well if you use a protective case on it. Compatible with Microsoft Surface Pro7. Note2: Incompatible with Surface Go/ Surface Pro 3，4, 5, 6. High Speed Data Transfer: 3.0 USB ports and USB C ports are supporting Data transmission speed rates of up to 5 Gbps,connect to your smartphone, tablet and other USB devices for effortless data transfer. USB 2.0 ports are the best connection option for wired/wireless mouse and keyboard that ensures the wireless network and other connected devices work properly. Please note that the USB C port is only for data transfer, Not support PD Function. 4K HDMI Adapter: Freely show your laptop's high-resolution 4K UHD@ 30Hz or full HD 1080P video to HDTV, monitor or projector via HDMI port, backward support 2K / 1080p / 720p / 480p / 360p resolutions. Hub with Ethernet Adapter: Surface pro LAN Adapter offers a full 10/100/Mbp Ethernet port, faster and more reliable than most wireless connections. Simultaneously supports USB 3.0 SD data transfer, which allows you to upload and download photos, videos, music and other files in second. Supports SD, SDXC, SDHC, RS-MMC card.