These devices plug into an HDMI port on your TV and connect to your Wi-Fi network. Once done, you can mirror or extend your computer's screen just as you would with a built-in wireless display.

A320M-ITX Athlon 200 GE I have a primary monitor that is HDMI that is my main display. Trying to get an older display going as a second monitor. When I plug the main display in to HDMI 1 and the ...

If you want to add a second monitor to your desktop but you only have one HDMI port, what are the options? As it turns out, there are a few.

Expand your one small screen to two 4K big displays with this compact adapter that works across Mac, PC, and compatible tablets and smartphones.

Other perks The awesome thing about this is that it does not stop at just being a Mac mini display. You can use your old iMac as a display for anything that has an HDMI out.