Device	S-state	  Status   Sysfs node
EHC1	  S3	*enabled   pci:0000:00:1d.0
EHC2	  S3	*enabled   pci:0000:00:1a.0
RP01	  S4	*disabled  pci:0000:00:1c.0
PXSX	  S4	*enabled   pci:0000:02:00.0
PXSX	  S4	*disabled
PXSX	  S4	*disabled
PXSX	  S4	*disabled
PXSX	  S4	*disabled
PXSX	  S4	*disabled
PXSX	  S4	*disabled