HUB_CHAR_POWER_PER_PORT_FLAG 420 uspace/drv/bus/usb/usbhub/usbhub.c descriptor.characteristics & HUB_CHAR_POWER_PER_PORT_FLAG; HUB_CHAR_POWER_PER_PORT_FLAG 311 uspace/lib/usb/src/dump.c ((d->characteristics & HUB_CHAR_POWER_PER_PORT_FLAG) ?HelenOS homepage, sources at GitHub