Startechcom usb stereo audio adaptors startechcom icusbaudio2d the icusbaudio2d external usb sound card from startechcom lets you add an spdif digital audio output and standard 35mm analogue audiomicrophone connections to your system through usb offering a convenient way to bypass or replace an internal sound card without having to open the computer casefor home theatre quality sound the usb dac digital to analogue converter offers 96khz24 bit sampling rates for both playback and