S/PDIF connectors and making your own MB S/PDIF connector - VideoHelp Forum
Amazon.com: MakerSpot Accessories - 2-Pin RCA (Composite Video, Audio, Coaxial S/PDIF) Female Jack Cable Dongle Adapter, Connect Pi 3 / Pi Zero W to Display Without HDMI Monitor : Electronics
S/PDIF connectors and making your own MB S/PDIF connector - VideoHelp Forum