## Physical Device Driver Reference

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### POWER_GETPOWERSTATUS (60h) - Remarks

On input, the ParmLength field indicates the size of the Parameter Packet in bytes. On output, the ParmLength field indicates the minimum required size (in bytes) for the function.

This command may be used even if the APM Subsystem is not connected to APM BIOS. This allows the status of the APM Subsystem to be determined through the PowerFlags field.