I just received a 410c, and have noticed some very odd behavior with the 5V rail. I was attempting to power the board with 10V, and it seemed to power up fine, but would not power up any of my USB devices (mouse was dead, keyboard dead, no lights on either). On further inspection, I found the board was not putting out any power to the USB ports, regardless of the position of the USB Host switch. I started varying the input voltage to the board, and noticed that when I got down around 7V it started to put out about 4V on USB. At 6.5V it put out nearly 6V on USB, and I had to bring the input voltage all the way down to ~5.8V before it finally put 5V out on USB and I was able to use my keyboard/mouse.
It seems to be behaving just fine on 5.8V, but this is out of spec, so I'm not comfortable with it...however it appears to be necessary in order to use any USB devices because the 5V rail is so finicky.