This is a dual USB docking station with each USB port delivering 1.5A of power and has an integrated cable restraint system. The docking station is compact, lockable, and can be used with one hand. When wired to your vehicle, the station provides power to your tablet's battery so it will stay charged and ready to go. Power pass through module replaces the tablet's battery and allows your tablet to be charged directly from your vehicle’s power source using your docking station.