Multi-Stream Transport (MST) Hub:An MST Hub enables three different display modes on up to four monitors connected to a single Mini DisplayPort output. Duplicate Mode:You can connect a single display at resolutions up to 4K@60Hz to mirror your computer's desktop. Extended Desktop Mode:Connect two monitors and the hub will automatically extend the image to span the two displays at resolutions up to 4K@30Hz for each display. Ideal for Digital Signage Perfect for creating a video wall for use in schools, churches, conference rooms, at trade shows, and in retail outlets.