The Notebook Review forums were hosted by TechTarget, who shut down them down on January 31, 2022. This static read-only archive was pulled by NBR forum users between January 20 and January 31, 2022, in an effort to make sure that the valuable technical information that had been posted on the forums is preserved. For current discussions, many NBR forum users moved over to NotebookTalk.net after the shutdown.
Samsung used to include this feature in their older notebooks made for the Korean market. Recent Samsung notebooks also contain an unidentified socket which may be for a Samsung TV tuner. However, unless you live very close to a transmitter, you need to use an external antenna to get a usable signal in which case a USB TV adaptor is convenient.