Possible values of an option:
The option description:
This option normally entering into group under the general title
Or similar, is responsible for tracking activity of the disk drive.
At value [Disabled] (or [Ignore], [Off]) tracking the given device misses, allowing the computer to pass in power savings mode even at its activity. Value [Enabled] (or [Monitor], [On]) orders to quit a mode with the under consumption of energy (or not to pass in it) at activity marked above the drive.