You guys really should spend a few moments doing a quick google search before responding. USB doesn't just magically deliver power, its negotiated between the d

You guys really should spend a few moments doing a quick google search before responding. USB doesn't just magically deliver power, its negotiated between the device and the power source. In the case of USB-C, the cable is involved in the negotiation. See slides 7&9 here specifically: http://www.usb.org/developers/powerdelivery/PD_1.0_Introduction.pdf http://www.usb.org/developers/powerdelivery/PD_1.0_Introduct... More details here: http://www.usb.org/developers/powerdelivery/ http://www.usb.org/developers/powerdelivery/