这个问题似乎是谷歌,但答案都指向使用系统分析器。 这很好,但是使用System Profiler,你所得到的是这样的: DasKeyboard: Product ID: 0x1919 Vendor ID: 0x04d9 (Holtek Semiconductor, Inc.) Version: 1.06 Speed: Up to 1.5 Mb/sec Location ID: 0x1d114000 / 11 Current Available (mA): 500 Current Required (mA): 100 USB2.0 Hub: Product ID: 0x0608 Vendor ID: 0x05e3 (Genesys Logic, Inc.) Version: 32.98 Speed: Up to 480 Mb/sec Location ID: 0x1d113000 / […]