Fortunately, it's usually very easy to connect a laptop to an external monitor so that you can continue working on a compact portable device while gaining the benefit of more screen space to work on.
The only option that genuinely extends a PC's display output is an external graphics card, one that bypasses the default graphics hardware. It's an expensive, niche option and only works with a small ...
A good laptop docking station offers something most modern laptops don't: ports. So, when you need to connect keyboards, monitors, phones, and more, you only need a single open USB port for the hub.