his 4 port USB charger is the ideal solution for charging an iPad or tablet, as well as most other devices that use a USB connection. Plugging directly into a power socket, the 4 port USB charger can handle voltages from 110 to 240 volt AC and converts them automatically to the 5 volt DC that USB devices use. As well as smart phones and tablets, the charger supports many other devises such as navigation systems, MP3 players and digital cameras. Thanks to the high output power and 4 USB ports, th versatile Conceptronic 4 Port USB Charger can charge 4 devices at the same time. A must-have for the office, at home or when travelling.