SPDIF Optical and RCA Out Plate Cable Bracket for PC Motherboard Cable Adapter Stock - Price history & Review | AliExpress Seller - Information Appliance Store | Alitools.io
FRONTX - Front Panel RCA Audio L/R (Red/White) - connects to motherboard AUX (audio) header pinout
SPDIF Out SPDIF Bracket RCA 24Bit 192KHz Digital Audio Output For Motherboard | eBay