The access cards were widely used in TiVo set-top boxes for customers who favored that platform, and some third-party tuners sold by Samsung and SiliconDust. A few TVs also sported CableCARD slots ...

If you look past the marketing, the $50 TiVo Roamio OTA is actually the same as the standard-edition Roamio, but with a nonfunctional CableCARD slot and no option for Lifetime Service. So ...