RNS 510 Query

[MasterSnorlax]

Hey guys I'm pretty new here. I've had a quick look around to try and my answer with no avail. Basically I have found a aux/usb switch on eBay and was wondering how compatible it is with the rns 510. I know the aux is plugged into the cd changer socket but the USB is abit puzzling. Looks like the plug that is used for the radio. Wondering if someone could clear this up for me. The kit in question is http://www.ebay.co.uk/itm/OEM-USB-AUX-CABLE-IN-SWITCH-FOR-VW-Volkswagen-Passat-B6-B7-CC-3CD-035-249-A-/310658871483?pt=Motors_Car_Truck_Parts_Accessories&hash=item4854b630bb

[MasterSnorlax]

UPDATE: After a further look into this, its not compatable with RNS510 due to not having the connector for the ipod