Exactly what does a TWC digital adapter do? I already have a TV with a digital turner and they send over the cable digital TV

[normwenger]

Function of TWC digital adapters

 

[kanewolf]

It may decrypt channels. If they retransmit over-the-air programming, they can still encrypt it. That prevents unauthorized sets. You have to pay a fee for each set. Those would also allow sets without a digital tuner to get programming.