I've got an early 2011 MBP 13" with a Apple-replaced logic board. A couple days ago, I got the dreaded "USB device drawing too much power" message while nothing was plugged in! And now my USB ports are dead, after only 3.75 years of owning this machine! Disappointed... Anyway, I realized I could add some USB ports via a Thunderbolt Dock. Do you guys know if the USB traveling over Thunderbolt will work through my Thunderbolt Port, or will it be blocked by the now-dead, onboard USB controller? Other ideas for a USB workaround? I kind of want to avoid TB, since it's probably going the way of firewire. I'd rather buy USB 3 peripherals, rather than throw money after this thing, but I realize this was a lot cheaper than a logic board replacement.