Dock mount for Mesa Rugged Notepad. May be attached to RAM-Mount 2.5 inch ball accessories or to desktop base, sold separately. Mesa attaches to dock in landscape format. Includes: 12VDC power port, one USB Client port (Mini-B), two DB-9 Serial Ports, two USB-A Host ports. Dock is designed to be used with Mesa Wall Charger or Vehicle Charger Cable. Serial and USB Host ports require external power to be applied. Includes safety locking screw for use in vehicle.