conn=hid[/<chip>]/usb=<bus>.<dev>[.<if>]
conn=hid[/<chip>]/raw=<path>
conn=hid[/<chip>]/sn=<serno>
+ conn=hid[/<chip>]/iokit=<path>
chip can be: bu86x, ch9325, cp2110, victor
path may contain slashes
path and serno are "greedy" (span to the end of the spec)