CNET también está disponible en español.

Ir a español

Don't show this again

HBO Max SpaceX astronaut launch Amazon Prime Day Mortal Kombat 11 Aftermath DLC launch trailer Justice League Snyder Cut release confirmed Best VPN service

Add an extra monitor to your computer

If you've never tried a dual-screen setup for your home or work computer, you're missing out. Here's how to add an extra monitor to your Mac or PC.

Now playing: Watch this: Add a second monitor to your computer
4:24

I hesitated writing this How To. Compared with the olden days of installing and configuring video cards and giant CRT displays, the process of adding a secondary monitor to any modern computer is practically plug-and-play.

But when I sat down to write a tutorial on this that included both Mac and PC, I realized there's still a surprising amount of variables to the process, and plenty of details that I hadn't considered before.

"Is VGA video quality inherently worse than HDMI?"

"Will generic Mini DisplayPort cables work in a Mac's Thunderbolt port?"

I went into this a little cocky, but it turns out I had plenty to learn.

More importantly, I put this together because you are still searching for it. We have an antique 2005 tutorial on this that involves Windows XP, third-party video cards, and a pair of CRTs, and it still gets an absurd amount of clicks. As a public service, I wrote this as a replacement.

As someone who uses a dual-display setup myself, I feel comfortable in the role of the dual-screen evangelist. Working with two screens really has improved my ability to multitask and minimized the amount of windows I have to juggle day to day. If this piece can help demystify a basic procedure and make your life a little easier, then I've done my job.

So, enjoy the video, and then dive into the step-by-step galleries for Windows or Mac.