This branch of the thread is about the case where your Bluetooth devices charge by USB, and so you grab your charging cable and connect them to your computer. It was pointed out that Apple's Bluetooth mouse does not work over USB even though it does charge over USB.
My point is that you do not need to get your mouse connected in order to turn on Bluetooth. You just need to get one of {keyboard, mouse, trackpad} connected.
My point is that you do not need to get your mouse connected in order to turn on Bluetooth. You just need to get one of {keyboard, mouse, trackpad} connected.