The reduced charging time means it only takes about two hours to fully charge your iPhone, iPad or iPod Touch, something that would take in excess of three hours using a standard USB port.
*With a simple On/Off Charge driver update, GIGABYTE motherboard users are able to take full advantage of USB charging of their iPhone/iPad/iPod Touch, giving them more options and convenience when recharging their new device.
* Due to certain mobile phone limitations, users may need to connect the mobile phone to their PC before the PC
enters S4/S5 mode to enable a quick charge from non ON/OFF Charge USB ports.
* Maximum 3 devices can be charged at the same time. Charging current may vary with PSU 5V stand-by spec
When you install the ON/OFF charge driver, please update the latest BIOS version for the best product efficiency.
Up to 40% faster than a regular USB 2.0
Also as it states it is best to do it when computer is on or before it goes into sleep state. There is a driver for windows for it so some of it has to be operating system dependent.
It also works when computer is of but again the 40% faster is for when driver is installed and latest bios used.
