AV:Link 4K HDMI Digital Audio Extractor A simple USB powered HDMI to HDMI unit that extracts digital optical and/or analogue audio from a HDMI source signal. Easy to install and operate, this handy little device is ideal for use with games consoles, LED TV's, projectors and Blu-Ray players that have no optical audio or 3.5mm headphone output. Extracts digital optical (Toslink) and/or Analogue (3.5mm headphone) audio signals from a single HDMI source device Simple plug and play installation and instant synchronisation without delay Supports HDMI v1.4b input/output resolutions up to 2160p @ 30Hz Specifications Input connectionsHDMI (4K) Output connectionsHDMI (4K), Optical (Toslink), 3.5mm (Stereo) Video resolutionUp to 3840 x 2160 @ 30Hz HDMI version1.4b HDCP version1.4 Audio outputStereo, DSD and HD (HBR) Power : inputDC/5V (micro USB) Dimensions60 x 58 x 22mm Weight102g