This is when you need an HDMI switch, a splitter, or both

A splitter allows a single peripheral to output to multiple displays.
Morning Overview on MSN

Will an HDMI splitter blur your screen? Here’s the truth

Home theater fans tend to treat picture quality as sacred, so the idea of inserting an extra gadget between a console and a ...
Chicago Tribune

The best HDMI splitter

An HDMI splitter allows you to display a video signal from a single source on multiple video components. For example, if you want to use a laptop computer to display a PowerPoint presentation on ...
New York Magazine

The Best HDMI Splitters on Amazon, According to Hyperenthusiastic Reviewers

Welcome to People’s Choice, where we find the best-reviewed products and single out the most convincing reviews. (You can learn more about our rating system and how we pick each item here.) An HDMI ...