"I purchased the Ultra Dock for the sole purpose of connecting my ThinkPad T440s to two external monitor. The docks has performed amazingly well. I am able to connected two 1920x1080 monitor to the dock using DisplayPort and continue to use the T440s monitor all at the same time. The three (3) USB 3.0 ports are great and the charging port is great for my cellphone. The dock can support up to three (3) external monitor simultaneously but one has to be VGA or it can support two (2) external and the built in display."