Your deviceLG UT80 UHD
Step 1 of 425%
What to do now
Find the ARC or eARC socket
Look at the HDMI sockets on the back of the television and find the one marked ARC or eARC.
Device-matched visualLG UT80 UHD · LG webOS
LG UT80 UHDLG webOS · 14:32
Back of the TV
HDMI 1
HDMI (ARC)
Optical audio