Device	S-state	  Status   Sysfs node
LID	  S3	*enabled   
SLPB	  S3	*enabled   
IGBE	  S4	*enabled   pci:0000:00:19.0
EXP4	  S4	*disabled  pci:0000:00:1c.3
EXP7	  S4	*disabled  pci:0000:00:1c.6
EHC1	  S3	*enabled   pci:0000:00:1d.0
EHC2	  S3	*enabled   pci:0000:00:1a.0
HDEF	  S4	*disabled  pci:0000:00:1b.0