Int 15 Fn 5304  - Advanced Power Management Specification - Disconnect In  [p]

   AX = 5304h
   BX = 0000h (device ID of system BIOS)

Return: CF clear if successful
   CF set on error
       AH = error code (03h,09h) (see AX=5300h)

See Also: AX=5301h,AX=5302h,AX=5303h