HelenOS sources

VENDOR_PRODUCT_FMT  165 uspace/lib/usbdev/src/recognise.c 		    "usb&" VENDOR_PRODUCT_FMT "&" IFACE_PROTOCOL_FMT,
VENDOR_PRODUCT_FMT  168 uspace/lib/usbdev/src/recognise.c 		    "usb&" VENDOR_PRODUCT_FMT "&" IFACE_SUBCLASS_FMT,
VENDOR_PRODUCT_FMT  171 uspace/lib/usbdev/src/recognise.c 		    "usb&" VENDOR_PRODUCT_FMT "&" IFACE_CLASS_FMT,

HelenOS homepage, sources at GitHub