You can use an HDMI splitter to connect three monitors, but the results likely wont be what you hope. A splitter is a video adapter that takes a single output and splits it into multiple duplicate outputs. It can only display a single video output on numerous monitors.

How do I get 3 monitors to work on one?

If youre running Windows 7 or Windows 8, right-click on the desktop and click Screen resolution; in Windows 10, click Display settings. This will take you to a screen where you can configure the options you have for multiple monitors in Windows. Here, you can confirm that all your monitors are detected.

What cables do I need to run 3 monitors?

E.g. If you have two HDMI ports and one DisplayPort on your computer, youll need two HDMI cables and a DisplayPort cable to connect three monitors.