RME Digiface USB 66-Channel USB 2.0 Audio Interface With 4x ADAT Optical I/O | Full Compass Systems
RME Digiface USB - The Optical Box
RME Digiface AES USB Audio Interface with AES/SPDIF/ADAT/Analog I/O | eBay
Boredbrain Optical Cable adat lightpipe and s/pdif digital - The Sound Parcel
Amazon.com: Conwork 2-Pack 3ft Fiber Optic TOSLink Digital Audio Cable Male to Male Lightweight and Flexible Compatible with S/PDIF, ADAT's, Dolby Digital -Slim 4.0mm OD : Electronics
RME Breakout SPDIF-S - Digital Audio Service
AYA 50Ft. (50 Feet) Toslink Digital Optical Audio Cable Wire (S/PDIF) DTS DOLBY Black - Walmart.com