NOTE – Please make sure the type-c or thunderbolt 3/4 port of your laptop both support CHARGING and VIDEO functions, or the dock could not work normally! Mac OS only support extend one monitor via this dock. If you use triple display, all extended 3 monitors will show the same. If your device is DP1.2, your 3rd monitor will under 1080P. 13 in 1 Laptop Docking Station – This USB C dock combines 13 ports into one : 2×Display Ports, 1×4K HDMI, 1000Mbps Ethernet Port, 4×USB 3.0 Ports, 3.5mm Audio Jack, SD & Micro SD card reader, DC 20V Power port, Upstream USB-C port. 4K HD & Triple Display – …..