Supporting three screens can be just as easy, or much trickier. It depends on the laptop, the graphics card (or integrated graphics), the graphics drivers, and perhaps the amount of memory available. ... Some laptops will support two external monitors if you can find a way of plugging them in.May 7, 2015
How do I connect 3 monitors to my laptop with one HDMI port?
Just plug the single USB end into your computer's HDMI port, and plug each of your two monitors into each of the two HDMI ports at the other end of the adapter. There is one big limitation here. While it does let you extend your desktop to two other monitors, those monitors will both display the same thing.May 2, 2021