CI + slot on TV: why do you need it

Answered: I have an AVTEX TV and it states that you can use a common interface module for you sky card, I believe that it might cost extra,

Voor de Common Interface wordt doorgaans de Conditional Access Module gebruikt Deze module steekt men in de Common Interface In de CAM bevindt zich

common slot machine symbols COMMON INTERFACE FOR SAMSUNG TV CI CARD ADAPTER Watch paid channels by inserting your TV viewing card into the COMMON INTERFACE slot

common slot Common Interface 5V Only · £ Est delivery dateEst delivery Thu, Jul 11 ; New Genuine Samsung Common Interface Card Adapter 3709-001791 CI 5V CAM SCAM1A · £