What does an external hard drive connected to a DVR typically enhance?

An external hard drive connected to a DVR primarily enhances the storage capacity for recordings. When DVRs come with built-in storage, they typically have a limited amount of space determined by the internal hard drive's size. By connecting an external hard drive, users can significantly increase the total available storage for recorded content, allowing for more shows, movies, and other video materials to be saved without the need to delete older recordings to make space.

Using an external hard drive provides flexibility and growth, accommodating the user’s increasing demands for more recordings, especially with high-definition content that tends to consume more space. Other options, such as internet speed, audio quality, and video streaming quality, are not directly influenced by the addition of an external hard drive to a DVR. This makes the enhancement of storage capacity for recordings the clear and relevant benefit of connecting an external hard drive to a DVR.