BESSKY HDMI ARC Adapter to HDMI & Optical Audio Converter 4k 3D 1080P CEC Max working current:0.15A/5V DC. HDMI output port support ARC (audio return channel). Input cable distance:5m AWG26 HDMI standard cable. HDMI supports 4K. Support CEC function. Output cable distance:5m AWG26 HDMI standard cable.Support input and output up to 5 meters AWG26 HDMI standard cable length Optical fiber cable output distance:30m(Use the optical fiber cable loss less the 0.2dB/m) Bessky is a registered trademark and the only authorized seller of coromose branded products.