I'm getting a USB 3.0 external enclosure for my SATA HDD, and was planning on getting one that was powered by USB instead of requiring an AC adapter. However, I recently read that having a drive powered by USB is not a good idea, as it can blow out the motherboard. Is this true? Are there any specs I should be concerned with when purchasing a USB-powered external enclosure? Should I avoid purchasing one that doesn't use an AC adapter? Should I just make sure to get a USB 3.0 Y-cable for a USB-powered one?