1、5 in 1: The For Surface dock combines 5 ports into 1, including 4K High Definition Multimedia Interface output, dual USB3.0 ports, and memory card/storage card reader ports. A space of 12.00 mm is designed between the mini DP and the USB port 2、5Gbps High Speed: USB 3.0 supports ultra fast data transmission up to 5Gbps, 10 times faster than USB 2.0 (480 Mbps), and 2 additional USB 3.0 ports to connect USB peripherals such as U disk, hard disk, keyboard, mouse, etc 3、4K Resolution: Mirror or expand your screen and stream 4K UHD (4K at 30HZ), Full HD 1080p or 3D video directly to HDTV, monitor or projector 4、Storage Card/Memory Card Reader: Built in storage card and memory card slots, you can easily access files in general storage card and Micro storage card. Supports simultaneous reading of 2 cards. Transfer data at a maximum speed of up to 100MB/S 5、Compact Design: The special slope and compact design of this USB hub is for Surface Pro 4/5/6. The wireless design makes your desktop more tidy and orderly. The aluminum shell protects the shape and releases heat easily. Lightweight for travel or business trips 6、Hot Swap: Plug and play, no need to install drivers, suitable for Win 10, for Win 8, for Win 7, for Win VISTA, for Win XP operating systems Item Type: For Surface Dock Material: Aluminum Alloy Applicable Model: Suitable for Surface Pro 4/5/6 Interface: 2 x USB3.0, 1 x High Definition Multimedia Interface, 1 x Storage Card Reader, 1 x Memory Card Reader USB3.0: Up to 5Gbps Data Transfer Rate High Definition Multimedia Interface: 4K High Definition Multimedia Interface, High Definition Video Resolution Can Up 4K at 30HZ and 1080p at 60HZ. Data Transfer Rate: Up to 5gbps Storage Card/Memory Card Reader: Storage Card/Memory Card  High Speed Reading. Support Simultaneous Reading of Storage Card/Memory Card , Up to 100M/s. Insert Dual Cards at the Same Time, You Can Copy Files and Data to Each Other Operating System: For Win 10, for Win 8, for Win 7, for Win Vista, for Win XP 1 x For Surface Dock