Last weekend, I was halfway through a Netflix show when I noticed something odd on my old laptop’s screen. The scene was meant to be dark and dramatic, but on my laptop it looked surprisingly flat.

A new monitor can be a great thing, but your computer might not adjust its settings to take advantage of it automatically.

Laptops are great for moving your "office" around the house, but sometimes you want or need a little more on-screen real estate. Connecting a larger external monitor to your laptop can more than ...