Check your computer’s video outputs
Check your monitors’ input ports
Get the correct cables or adapters
Turn off the computer and monitors
Connect the first monitor to the computer
Connect the second monitor to the computer
Power on the monitors
Power on the computer
Open display settings
Detect both monitors if needed
Choose Extend display mode
Arrange the monitor positions
Set the main display
Adjust resolution and scaling
Set the refresh rate if needed
Save the settings
Test mouse movement across both screens