Check that your computer has enough video ports for two monitors
Identify the available ports on your computer and monitors, such as HDMI, DisplayPort, DVI, or VGA
Connect each monitor to the computer using the appropriate cables
Plug both monitors into power
Turn on the monitors and the computer
On Windows, right-click the desktop and select Display settings
On Mac, open System Settings and select Displays
Detect the second monitor if it does not appear automatically
Choose the display mode you want, such as Extend or Duplicate
Arrange the monitor positions to match their physical layout
Set the main display if needed
Adjust resolution and scaling for each monitor
Save the settings and test by moving windows across both screens