This device is not essential since the multimedia devices can be charged on all but the sector is more than 2 devices can be connected to two USB connections in parallel at the same time convenient when electrical outlets are scarce and given the proliferation of multimedia objects, it can be useful! In addition, devices such as MP3 / MP4 players are often rechargeable via USB to computer. Do not do it just to turn on the PC to charge an MP3 player. There is much more convenient and efficient.
In short, nothing revolutionary in this USB charger but it brings a real practical and functional improvement and an interesting alternative when a power cable is defective or forgotten.
