This is my first post on here. I have a question about USB hubs. Does anyone know of a USB hub that can be powered via USB into wall outlet similar to phone cables. If you don't understand what I want to do is find a USB hub, connect a USB/Power cable into it then plug that into the USB port of the Surface Pro 3 power adapter. This way I don't need to carry anything extra such as a USB hub power brick. Let me know your thoughts.