Multi-function 6-in-1 Mini Dock This is a direct-connect multi-adapter that expands the Surface Pro 4/5/6 with 6 ports. (Connects USB-A and Mini DisplayPort) With this one adapter, you can expand various peripherals. This cannot be used with other Surface series models due to the presence, absence, or position of ports. 【Ports】 Host Interface: USB 3.0 Type-A (Male), Mini DisplayPort (Male) USB Ports: USB3.1 x2 Video Interface: 4K Mini DisplayPort x1 / 4K HDMI x1 Card Reader: MicroSD Card Reader / SD Card Reader I purchased this 2 years ago and used it, but I am selling it because I no longer use it due to a change in my computer. There are also minor scratches due to it being a used item. Thank you.