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.
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 .
Without using an external box, cable-ready TVs can display what?
Without using an external box , cable - ready TVs can display what ?
HD content
HD content