I just got the Audiobox USB 96. When I leave it plugged into my computer the red power light stays lit, even when the computer is turned off. Is it okay to leave it plugged in and “on” constantly, because I rarely turn off my computer, except for reboots. Can I leave it plugged up or do I need to unplug it when I’m not using it? I have no problem with doing it, but I don’t want to take the chance of burning up my unit.