To get your PC to identify several monitors, follow these steps:
Make sure your wires are correctly connected to the new displays, then pick a display option by pressing the Windows logo key + P.
Here’s what you should do if you need further assistance:
Select Start > Settings > System > Display from the Start menu. Your computer should recognize your displays and display your desktop automatically. Select Detect if you don’t see the monitors.
Select an option from the list in the Multiple displays section to define how your desktop will appear across your screens.