Har en Denon AVR X3500H receiver, og her er hva som står om RS232 porten for den:
"RS-232C connector Used to connect home automation controller devices fitted with RS-232C connectors. Consult the owner’s manual of the home automation controller for more information about serial control of this unit. Perform the operation below beforehand. A Turn on the power of this unit. B Turn off the power of this unit from the external controller. C Check that the unit is in the standby mode."