I wonder if Gigabyte's USB On/Off Charge feature they have on their newer boards would help with any underpower issues? I have a Gigabyte board with this feature, but I've never thought to look into it let alone use it before I saw this thread. I'll be getting an Active DP - DVI Adaptor next week as I've had enough of my DP > VGA adaptor.
From what I've read, it appears the motherboard has a chip which regulates power to the On/Off USB port so that it provides as much current as the USB device needs. This is so USB rechargable devices, such as the iPad, iPhone etc, get the required current to charge at full speed. As you probably know, a standard USB connection on a PC charges slower than the wall socket powered USB charger.
http://www.gigabyte.com/press-center/news-page.aspx?nid=875
The above link shows this in effect with with an Iphone getting just above 500mA and an iPad getting just below 1000mA. I wonder what an Active DP - DVI will do?
In any case, I hope to be able to test this out next week. I don't have a multimeter at home, but I do at work and I have plenty of Gigabyte boards to play around with. If I get a chance next week, I'll have a little play around and report what I find.
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