List USB devices that can wake up the system from sleep
cat /proc/acpi/wakeup
Device S-state Status Sysfs node
GPP6 S0 *enabled pci:0000:00:02.2
GPP7 S0 *disabled
GP11 S0 *disabled
SWUS S4 *disabled
GP12 S0 *enabled pci:0000:00:04.1
SWUS S4 *disabled
XHC0 S3 *enabled pci:0000:33:00.3
XHC1 S3 *disabled pci:0000:33:00.4
NHI0 S0 *disabled
NHI1 S0 *enabled pci:0000:34:00.6
XHC2 S3 *enabled pci:0000:34:00.0
XHC3 S3 *enabled pci:0000:34:00.3
XHC4 S3 *enabled pci:0000:34:00.4
LID S4 *enabled platform:PNP0C0D:00
SLPB S3 *enabled platform:PNP0C0E:00
Toggle device status
echo XHC4 > /proc/acpi/wakeup