Windows – How to duplicate 3 displays in Windows 10

multiple-monitorswindows 10

I'm running a setup with 1 monitor and 1 computer with an RX470 where they are connected with 3 cables: DVI Dual Link, HDMI and DP. Both Windows and the AMD software correctly detect these connections – as 3 monitors. I switch between the input type via a button on my monitor. The problem should be the same with 3 different monitors and any connection types.

Windows allows me to:

  • Disable any of them.
  • Extend any of them.
  • Duplicate any 2 of them.

However, I want to duplicate all 3. I read a bit around other sites and it seems to be a limitation of Windows 10, but I didn't find a definitive source. Some suggest that you have to use additional hardware like a splitter.

How to duplicate 3 (or more) displays?

Best Answer

This worked on my MSi laptop in WinVer 1809, using (1) the built-in display, (2) an Acer display via a DP & VGA adapter, and (3) a Samsung TV via HDMI:

  • right-click on unused part of display
  • select "Graphics Properties"
  • select "Multiple Displays"
  • check "Clone Displays" then "Select one or more active displays" (i had all 3 showing) Then all 3 displays showed the same screen/image.
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