generate questions: Additionally, cable-ready TV sets can display HD content without using an external box. They have a QAM tuner built-in and/or a card slot for inserting a CableCARD.
HD content can be displayed by cable-ready TVs without using what? {sep_token} Without using an external box, cable-ready TVs can display what? {sep_token} What features allow the cable-ready TVs to display HD content without an external box? {sep_token} What kind of built-in tuner will allow a cable-ready TV to display HD content without an external box? {sep_token} What kind of card will allow a cable-ready TV to display HD content without an external box?