CableCARD

A CableCARD is a device around the dimensions of a credit card (or a laptop PCI card) which cable providers give out in order to use in TVs, Cable Receivers, or DVRs, especially TiVos, with the cable provider. CableCARDs have always kind of been a pain to order and many cable providers require you to pay rental fees for using them. CableCARDs are becoming harder to rent as cable popularity is declining.