Microsoft Surface Pro 3 1661 Docking Station

All the ports you need - with two high-definition video ports, a gigabit Ethernet port, four high-speed USB 3.0 ports and an audio output
Lightning fast with minimalist design - surface dock uses surface connect technology which enables high-speed transfer of video, audio and data over a single cable keeping your desk clutter-free
Easy setup - surface dock is quick and easy to set up, connect your peripherals to surface dock and then attach the magnetic surface connect cable to your device
Compatible with Microsoft Surface Pro 3/Pro 4/Surface Book/Surface Book 2 and the Surface Pro

Adopter not included.

Interfaces/Ports
Host Interface Proprietary Interface
Audio Line In Yes
Audio Line Out Yes
Total Number of USB Ports 5
Number of USB 2.0 Ports 2
Number of USB 3.0 Ports 3
Network (RJ-45) Yes
DisplayPort Yes