LG UB85 series Owner's Manual page 74

14
ASSEMBLING AND PREPARING
NOTE
How to use the ferrite core (Depending on model)
Use the ferrite core to reduce the electromagnetic interference in the LAN cable. Wind the LAN cable once
on the ferrite core. Place the ferrite core close to the TV.
[Cross Section of Ferrite Core]
[to the TV] [to an External device]
Ferrite core