ZYElroy 3.5mm Male to RJ45 Female Ethernet LAN Jack Adapter Cable Touch Control Devices Network Audio Extension Cord : Amazon.co.uk: Electronics & Photo
InLine® 3.5mm Audio over LAN / Ethernet / RJ45 Cable max. 50m complete set | Extend via Cat.5 (USB, Audio, Data) | Signal control | Product Overview | INTOS ELECTRONIC AG - Online Store
RJ-45 to balanced or unbalanced audio cable wiring - TelosHelp
3.5mm 1/8" Male Jack TRS Audio To RJ45 Socket Ethernet LAN Network Adapter Cable | eBay