What kind of monitors are compatible with my T450S Thinkpad DS?

Hello,
I’m looking to purchase monitors for my docking station that’s in the mail. I’m just not sure what kind will be compatible. What specs should I be looking for in a monitor?

My laptop is a T450S Thinkpad. The DS I’m getting has 3 ports, 1 DVI and VGA ports. 5 ports in total but only 3 screens can be used at a time.

Thanks,
Bobby