A switch includes housing and a magnet that is mounted inside the housing. When a desired program is detected an alert appears on screen, which can be selected to navigate to a current alert user interface from which detected desired programs can be selected for presentation. In one embodiment, the tubular string includes a first expandable zone isolation unit disposed on a first side of a zone to be isolated, a second expandable zone isolation unit disposed on a second side of the zone to be isolated, and a perforated tubular disposed in fluid communication with a producing zone. Also, the present subject matter includes embodiments where the first capacitor stack and the second capacitor stack are disposed in a case filled with an electrolyte. Advantages of the invention include the ability to provide high bandwidth communications between computer systems and memory in an efficient and cost-effective manner.