This policy setting allows you to turn off "Found New Hardware" balloons during device installation. If you enable this policy ...

This policy setting allows you to turn off "Found New Hardware" balloons during device installation.

If you enable this policy setting, "Found New Hardware" balloons do not appear while a device is being installed.

If you disable or do not configure this policy setting, "Found New Hardware" balloons appear while a device is being installed, unless the driver for the device suppresses the balloons.