As you probably know already, an iPad requires a certain power on USB port to be charged from. Thus, some motherboard manufacturers (such as ASUS, Gigabyte etc) had released a special driver that recognizes that an iPad is connected to the port and adjust the USB power accordingly.
On one of my computers (Gigabyte motherboard) it works fine. But other one is Dell Optiplex 780 and the regular googling by
"<motherboard type> + iPad charging" doesn't seem to bring encouraging results.
Just for completeness: no, the iPad is not being charged without any special driver installed (out of the box) either.
Any suggestions will be welcomed.