?Plug and Play & Hot Swapping?Built-in conversion chip, plug and play, no driver installation is required. We guaranteed if you have any questions you can contact us at any time, we will reply to you within 24 hours you also get 24 Months Warranty. ?3.5mm AUDIO Port & SD/TF Card Reader Ports? The 3.5mm audio headphone cable can be perfectly matched to this Surface laptop 1/2 dock hub, and you can instantly experience the listening experience brought by music and video. The plug-and-play SD and TF card slot allows you to process more data, and more effectively transfer files to your Surface Laptop 1/2 in time. Both slots can't be used at the same time.SD & Micro SD card slots all support data transfer rates up to 480Mbps. ?Fast Speed Data Transmission?This Surface Laptop 1/2 Dock design with USB 3.0 Port, USB 2.0 Port, and USB C Port, meet your various needs. USB 3.0 port with high speed up to 5Gbps, USB 2.0 port, and USB C port with speed up to 480Mbps. Giving seamless access to USB-A and USB-C wired keyboard, mouse, USB flash drive, hard disk, etc. ?4K Ultra High Definition HDMI Adapter?The Surface Laptop 1/2 Hub has a 4K HDMI Port and supports resolutions up to 3840 x2160@30Hz. 4K HDMI adapter mirrors your surface laptop 1/2 display to HDMI-enabled devices with a resolution up to 3840X2160P/30Hz and freely shows your laptop's high-resolution display on most HDTV, monitors, or projectors. Confirm whether the resolution of the monitor can reach the corresponding requirements before you use it. ?7-in-1 Surface Laptop 1/2 HUB?7 in 1 Surface Laptop 1/2 Docking Station Special bevel-side and compact design perfectly match your Surface Laptop 1/2. Design with 4K HDMI, USB 3.0, USB C, USB 2.0, SD Card Slot, TF Card Slot, and 3.5mm Headphone Jack Port. Wireless design makes your desktop more clean and organized, extend your surface Laptop 1/2 for more. Note: This Surface Laptop 1/2 dock does not fit Surface Laptop 3/4/GO.