Device	S-state	  Status   Sysfs node
PWRB	  S3	*enabled 
PXS1	  S5	*enabled   pci:0000:02:00.0
PXS2	  S3	*disabled  pci:0000:03:00.0
USB1	  S3	*enabled   pci:0000:00:1d.0
USB2	  S3	*enabled   pci:0000:00:1d.1
EHC1	  S3	*enabled   pci:0000:00:1d.7