Asus P8B WS - Manual (Page 126)

4-8 Chapter 4: Software support
4.3.6 Ai Charger+
Battery Charging Version 1.1 (BC 1.1), a USB Implementers Forum (USB-IF)
certified USB charging function, is designed to make USB charging faster than
the standard USB devices. If your USB device supports the BC 1.1 function*,
when you connect your USB device to your system, the system automatically
detects your USB device and starts a fast USB charging. The charging speed
may get 3 times faster than that of the standard USB devices**.
• * Check your USB device manufacturer if it fully supports the BC 1.1
function.
• ** The actual charging speed may vary with your USB device’s conditions.
• Ensure to remove and reconnect your USB device after enabling or
disabling
Ai Charger+ to ensure normal charging function.