A cable box is a device that connects to a television and receives signals from a cable service provider. It allows users to access various channels, including live TV, on-demand content, and sometimes streaming services. The box decodes the signals so that the content can be displayed on the TV screen. Many cable boxes also come with features like digital video recording (DVR), which lets users record shows to watch later. Some models may include interactive guides and parental controls, enhancing the viewing experience. Cable boxes are often provided by companies like Comcast or Spectrum as part of their service packages.