1. 7-in-1 USB C Multi-Display Adapter: USB-C Docking Station extends a single USB-C port to dual HD ports 4K(1 x 60Hz + 1 x 30Hz), 1 x 4K 60Hz DP, 1x1080P VGA, 3 x standard USB 2.0 ports. Note: Only Windows OS can expand 4 monitors(support MST ), for macOS does not support expansion mode because of for macOS limitation
2. USB-C to Dual HD Docking Station: Windows OS can connect up to four additional identical or different displays (ABCD and AAAA display modes). Due to for macOS limitation, the additional four monitors will display the same content for macOS (ABBB or AAAA)
3. Dual 4K 60Hz Output: This USB-C hub adapter supports HD 2 and DisplayPort up to 3840*2160 4K 60HZ output at the same time (Laptop specification must be DP1.4 signal output, otherwise it will be 30HZ); USB C to 1080P VGA adapter is compatible with VGA projectors, streaming video to an HDTV or connect to a projector to view presentations
4. Plug & Play: No drivers are required for the USB C to DP Multi-Port Adapter, to instantly extend the display of your laptop, tablet, etc. Requires the host computer's USB-C port to support DP Alt mode. More Connectivity Options: 3 additional USB 2.0 transfer speeds of 480Mbps allow you to connect your keyboard or mouse without any delay, and since USB 3.0 radio frequency interferes with wireless connections, it's best to connect your wireless devices to USB 2
5. Wide Compatibility: This USB-C Multi-Display Simulator is compatible with Thunderbolt 3/4 or USB C ports, supports video out or DP Alt mode, such as Dell XPS13/15, Lenovo Yoga 720/910/920/930, Microsoft Surface Book 2/Surface Go / Surface Laptop 3, Dell Latitude 13 7000/Latitude 13 E7370, etc.

Specifications:
1. Model: UMD304
2. Interface: 1 x HD1 (4K 30Hz), 1 x HD2 (4K 60Hz), 1 x DisplayPort(4K 60Hz), 1 x VGA(1080P 60Hz), 3 x USB2.0-A(480Mbps)
3. Size: 11.0x5.8x1.9cm/4.3x2.3x0.7in
4. Cable Length: 25cm/9.8in
5. Weight: 85g / 3.0oz
6. Case material: aluminum

Notes:
1. The Type-C port of the host computer should support video output to enjoy the full functionality of this hub.
2. When you use this dock to connect a Windows laptop with four monitors, you need to turn off the screen of the host computer.
3. Some Windows laptops only support 3 monitors (including the host screen) due to graphics card limitations.
4. Swivel mode, flip mode, and HDCP are supported.
5. Your USB-C phone/tablet should support the OTG function.