def METHOD_NAME():
	if isfile("/proc/stb/info/sn"):
		hwserial = fileReadLine("/proc/stb/info/sn", "unknown", source=MODULE_NAME)
	elif isfile("/proc/stb/info/serial"):
		hwserial = fileReadLine("/proc/stb/info/serial", "unknown", source=MODULE_NAME)
	elif isfile("/proc/stb/info/serial_number"):
		hwserial = fileReadLine("/proc/stb/info/serial_number", "unknown", source=MODULE_NAME)
	else:
		hwserial = fileReadLine("/sys/class/dmi/id/product_serial", "unknown", source=MODULE_NAME)
	return hwserial.strip()