I need extra power for my USB harddrive and USB DVD player. I've read up on the topic and even made various posts. But, I just stumbled arcross the "CNX-P5V 15 Watt +5V Regulator". Not a bad price. I know I could make it myself, but this seems easier. 15watts is way more than enough. 3 watts would probably be sufficient. Is there a similar option that would be easier / cheaper? Any ideas? Am I being silly? Maybe I should build it?