Mirror or Extend Your Monitors
The USB-C to Dual HD Portable Dock allows you to mirror or extend your Windows-based USB-C laptop to two additional monitors or mirror your USB-C or Thunderbolt 3 MacBook to another monitor. When using a Windows USB-C laptop with two other monitors, your laptop screen can be utilized as a third monitor for separate task windows.
1 Mac OS does not support monitor extending (MST), and can only operate in mirror mode