4 USB Chargers

Attaches directly to Apple 12W USB Power Adapter, 45W, 65W Apple MagSafe & MagSafe 2 Power Adapter, 85W Apple MagSafe & MagSafe 2 Power Adapter

Maximum 20W / 4A USB Charger Power with 4 Charging Ports. Power And Charge Up To 5 Devices Simultaneously.