USB 2.1提供2A供電但是從未見過産品
經常有遭遇USB 2.0對外接硬碟供電不足的問題
板上USB 2.0接口供電更為小咖
所以很想知道USB 3.0接口供電是多少
以下是wiki中的內容，但是我沒看懂
unconfigured device？
configured device？
who's who?
wiki
USB 3.0 Maximum bus power is increased to 150mA per unit load (+50% over USB 2.0). An unconfigured device can still draw only 1 unit load, but a configured device can draw up to 6 unit loads (900mA, an 80% increase over USB 2.0).
