[. . . ] Installation Switch on your computer and wait until your system has loaded completely. [. . . ] Optical out: In order to use the optical output of the AUREON DUAL USB, please insert the adapter provided in the Speaker Out jack. Now any commercial TOS-Link cable may be used for signal transmission. Note If other sound devices are installed in the system, the AUREON DUAL USB may need to be selected as the preferred playback device in the Control Panel (Windows) or Audio Midi Configuration (MAC). No software supplied This product is delivered without software CD because the necessary drivers are already included in the operating system. [. . . ] De/10542 The above address also contains further information such as FAQ’s, manuals, tips and tricks and our hotline number. [. . . ]