Dual USB device charger features 2 USB ports with high total charging 3 amp output. Compatible with iPhones, iPods, iPads, Android and more. Fits standard 1-1/8" diameter hole. Maximum output current of 2.1A per single USB device. 3A maximum total output. Rear mounted F2 faston (blade type) tab connections. Built-in blue colored LED tell you the unit is ON.