Enables 2 monitors to work simultaneously with extended mode, expansion mode or mirror mode. 【Note: Not Compatible With Mac】 Extends single mini DisplayPort to dual display. Supports resolutions up to 4k @ 30Hz on up to 2 displays independently. DisplayPort 1.2 with MST is required for dual independent display output (Perfect for Microsoft Surface Pro2, Pro3, Pro4). Requires an external USB power source to power up this adapter(USB cable included). Simply plug & play, no need to install additional drivers. Please reach out to us if you experience any compatibility issues.