How to use your laptop as a second monitor

If you have an extra laptop lying around, you can connect it to your primary laptop with a wireless or wired connection for a free dual monitor set up.

If you have an extra laptop lying around, you can connect it to your primary laptop with a wireless or wired connection for a free dual monitor set up.<p><img src="https://www.engadget.com/img/gallery/how-to-use-your-laptop-as-a-second-monitor/intro-1793914883.jpg" /></p>