Tablet with an AC-powered USB hub

I was thinking of purchasing a tablet (with a USB port) and using it as my primary computing device. The key to that would be the ability to hook up to a non-portable AC-plugged in USB port, where I can attach different peripherals like an external hard drive or DVD burner. Kind of like a control centre at my desk, with the benefit of picking up the tablet as a portable device.



Is that even possible? Anybody here ever tried this?