4.5 very poor product! hicecream | 28/02/2012 | See all hicecream's reviews (1) i purchased this device. with the intention of using four ports at once. but discovered theres not enough power to charge my twin charging cradle, even in the direct port. when i plug in four devices. headset, portable harddrive psp etc. it tells me theres not enough power please remove a device. even when i do this the same message appears. overal im very disapointed. if you want extra! usb ports to charge more devices. i would highly recommend the offical usb ac adaptor! as this works wonderfully!