Is "USB input" written on the USB port of TV?
Do you want to watch contents from USB?
How to fix
Depending on model, you may or may not watch from your USB.
※ Though there is USB port, if it is written “USB in service only”, you can’t watch from your USB.
① Insert the USB or external hard disc into the USB port.
② It automatically recognizes USB and the menu starts. Or select USB device in the ‘External input’ option.
③ If automatically recognized, video / image / music list appears on the screen.
④ If you select the contents you want to enjoy, it will be played.