## Physical Device Driver Reference

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### POWER_GETPOWERINFO (62h) - APMVersion

APMVersion APMVersion is a complex field composed of the following BYTE values:

The high BYTE contains the APM major revision level at which the Power Management subsystem is running.

The low BYTE contains the APM minor revision level at which the Power Management subsystem is running.

Note that this is not necessarily the same as the BIOSVersion It will be set to the lowest of the following versions:

The APM version supported by the machine's BIOS.

The highest APM version supported by the OS/2 Power Mangement Subsystem.

The APM version specified through use of the APM device driver /V command line option.