If you have one of these models and want to upgrade from a non-recording service to a DVR service, this module is the intended upgrade path. Installation and Setup: Simple Plug-and-Play One of the major advantages of the ARRIS DVR-One 500GB module Go to product viewer dialog for this item. is its ease of installation. Unplug the ARRIS set-top box Go to product viewer dialog for this item. from the power source. Mounting: Align the DVR-One module Go to product viewer dialog for this item.