Connect the AC7012 USB-C to HDMI Dual Monitor MST Hub to your laptop with USB-C to clone or extend your desktop to 2 HDMI monitors. The hub supports MST (Multi-stream Transport) that enables the desktop extension to two HDMI monitors. Attach a single monitor with 4K @ 60Hz resolution or two monitors with a maximum resolution of 1080p @ 60Hz to the AC7012. This solid aluminium hub is USB powered, no external power supply is needed. Please make sure the USB-C port of your notebook supports DP Alt Mode.