Gigabyte On/off charge technology?

[simontay1984]

I've read some of the reviews about the recent Gigabyye boards with On/Off charge technology that provide more amps for high drain USB devices.
http://www.gigabyte.com.tw/microsite/185/on-off-charge.htm

What I don't get is why you'd need to market this as a new feature. Surely the amount of amps available to USB devices is dependant on the PSU?
All ATX PSUs easily provide more than enough amps on the main +5V output and at least 2A on the 5VSB output.

I always thought on all ATX boards that the 5V pin on the USB connectors is simply connected to the +5volt and +5VSB ATX connector pins via traces on the PCB. Why should you need a driver unless there's some sort of (uneccessary?) current limiting circuitry that limits each USB port to 500mA?

[Dark Mantis]

If I ma understanding your question correctly then it is because of the ability to charge when the computer is in OFF mode not whilst it is running normally. Also I think you are probably right about the limiting of current noramlly because of the heat build up in the circuits. This motherboard has twice the current carrying capacity  of normal.

[JSladen]

Does anyone know if On/Off Charge can support devices apart from Apple iphones etc?
None of my stuff (which detects high power usb sources everywhere else) goes into fast charge when I connect it to the Charge usb port on this motherboard.