Got a spare PCI card laying around? Toss it in that last free slot; assuming you're running a recent version of windows, it'll pick it up, and you're good to go.

Here is how to connect a Lenovo ThinkVision monitor to a Windows laptop and experience two screens. Check ports on your laptop & monitor Make the connection Connecting to dual ThinkVision via USB-C ...

The HDMI port on your motherboard or GPU usually connects to your primary monitor. If you're using a relatively new graphics card and monitor, your HDMI port is probably vacant, considering many ...