FRONTX - RCA Composite Video Cable - RCA Coaxial SPDIF - connect to motherboard header (pinout)
1-in 3-Out S/PDIF Splitter [Ultra-Low Jitter, USB Power Included ] 3-Way Toslink Optical Audio Adapter for HDTV, Xbox One/360, PS4/PS3, CD/DVD/Blu-Ray Player, Home Theatre, Headphones, Soundbar - Newegg.com
Nvidia HDMI SPDIF Audio 2-Pin Adapter Cable - MODDIY
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Spdif Optical And Rca Out Plate Cable Bracket Digital Audio Output For Asus Msi Gigabyte Motherboard - Pc Hardware Cables & Adapters - AliExpress
Amazon.com: SPDIF RCA/Optical Out Back Plate Cable Bracket : Electronics
7.1 Channel PCI Express Sound Card - Our video cards and sound cards enable you to add smooth video performance or high-end audio capability to your PC computer, through a motherboard PCI