I just purchased a firewave for my iMac. I realized that even if the imac is off, there is still power going to the firewave as the lights are still lit. is this harmful for the imac at all, since power is constantly running through the imac to get to the firewave. and second of all, how do I save profiles if I ever need to disconnect the firewave and reconnect it later? my sound profiles are reset, which gets frustrating with time. thanks!