On 15 Nov 2007, at 23:38, Pranav Desai wrote: > Just for curiosity, from a design perspective why wouldn't or > shouldn't the hardware/software start drawing 500mA and then fall back > to 100mA if not available ? Because once you've tried drawing 500mA the blue smoke will escape from the host & 100mA will _no longer_ be available. Stroller.