62 ODROID-XU4 USER MANUALboot the system, then configure it by launching PulseAudio VolumeControl from the Applications menu. Then, in the Configuration tab,select the Digital Stereo Output profile, and select the Output Devicestab and update the configuration for the CM108 device as shown be-low. Note that TrueHD or DTS-MA pass-through is not supported.PulseAudio Volume Control settings for the SPDIFConnect a TOSLINK optical cable to this SPDIF peripheral andan AV Receiver capable of accepting the optical TOSLINK cable. TheAV Receiver should be connected to an appropriate set of speakers.Power up the AV Receiver and select the appropriate input option onthe AV Receiver. Launch the browser on the XU4 and access a You-Tube video link that has audio included. Play it in order to verify thatthe audio is audible.USB-CAM 720PHardkernel offers a USB-CAM rated at 720p with up to 30 fps.The image below shows a camera that is certified to work with theXU4:720p 30fps USB-CAMAttach the USB-CAM to an available USB port on the XU4, andwait for a few moments. Install the camorama application using thefollowing command:$ sudo apt-get install camoramaChapter 4