This is a blurb I got from the Ipkonfig review:
http://www.ipkonfig.com/Reviews/Misc...4/index3.shtml
At the time of this review, the reservoir was equipped with a 145 GPH (Gallons Per Hour) pump. OCH has since upgraded the reservoir pump to 500 GPH!
[i]The image above also shows the power source as an outlet connection. The new 500 GPH reservoir plugs straight into a 4 pin Molex connector in the computer case. Simply, the company is always making changes to improve, some due to customer feedback.[\i]
So I guess it used to be AC, and they've changed that to DC. Is that such a bad thing? The great part is that it now turns on when you press the power button, wich saves you the trouble of switching your pump on...