Cybernet i-One 17 User Manual page 29

4. To check the status of each system device after users are finished
installing the above mentioned drivers and programs, click [Start]-
[Control panel]-[Performance and maintenance]-[System] to bring up
the [Hardware] screen in 'System registration information'. Here click
'Device administrator' to check whether each device is working
properly. If the yellow exclamation mark is in front of the device's
name or if the name of the device is not displayed, this means the
pertinent device is not functioning normally or it is not properly
installed. In this case, users have to update or reinstall the driver for
that device.