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 ...
Since 2004, I have worked on PCMag’s hardware team, covering at various times printers, scanners, projectors, storage, and monitors. I currently focus my testing efforts on 3D printers ...