I love this device, excellent space saver and has 4 great usbs on the bottom.

I don't know enough about these things to venture a guess as to why that is; but with expensive devices, there's no reason to cheap out when it comes to sending them power.

I usually have to devices hooked up at minimum and it works great

this is a great way to charge all your devices in one location..and NOT losing a power outlet

This is a great device, I get an extra AC plug and 4 USB charges to get all my devices charged, i also use this for travel since its very convenient, it charges al my devices fast.