)
Values for system state ID:
 0000h	ready (not supported for device ID 0001h)
 0001h	stand-by
 0002h	suspend
 0003h	off (not supported for device ID 0001h in APM v1.0)
---APM v1.1---
 0004h	last request processing notification (only for device ID 0001h)
 0005h	last request rejected (only for device ID 0001h)
 0006h-001Fh reserved system states
 0020h-003Fh OEM-defined system states
 0040h-007Fh OEM-defined device states
 0080h-FFFFh reserved device states