I have a brand new NEO QLED QN80D TV.  I have some LED lights plugged into the USB port in the back of the TV.  When I turn off the TV the lights do not turn off.  Last night the lights stayed on until I unplugged the USB port in the morning.  I tried looking for some setting under system in the power section but I did not see one.  I like the lights in the back of the TV but don't want to leave them on all the time.  It would be nice if they turned off when I turned off the TV.   Thanks for your help.