How to Monitor Multiple PCs on One Screen. Using a KVM switch -- which stands for Keyboard, Video and Mouse -- you can control multiple computers with just one monitor, keyboard and mouse ...

Assuming you can’t finagle a hand-me-down, a 24-inch monitor with an IPS screen will run you around $150, such as the Acer K242HYL —our favorite budget 1080p display—shown above.

How Many Monitors Can You Add? Most computers can run dual monitors. But if you want to add a third screen or use two 4K monitors, check that your device is capable first.

If you’re used to working with multiple computer monitors at your desk, traveling with a laptop can be tough. Suddenly, you’re back to the single-screen lifestyle, and on a cramped laptop ...