Triple display USB C DOCKING STATION is compatible with specific Thunderbolt 3, Type C (Gen2), or USB-C Windows systems. It supports a dual HDMI display up to 3840 x 2160@30Hz, or triple 1920x1080 displays @60Hz with VGA. ( For apple computer user (MAC OSmac os), displays are mirror mode only.) Ensure your Laptop has a 'power delivery' port (USB 3.1 Type-c (gen2)) or PD charging' before purchase each monitor will be limited to a maximum resolution of 1920 x 1080@60Hz. Edit(Extended Display Identification Data) may blackout for 1-2 seconds when data transfer; please be patient wait for the data completed. The Type C PD Charging port for power passing-thru only.