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iFi releases the iLINK USB-to-SPDIF converter
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ultraDigital 1.5 - USB to SPDIF and i2s converter – Small Green Computer
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Amazon.com: Cubilux Uni-Directional USB A SPDIF Input Adapter for PC, USB Optical Line-in Dongle, Toslink to USB Receiver, USB A SDPIF RX Interface Suitable for Laptop Computer【ONLY for Stereo Audio Signal】 :
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