Now, why would you need to know the port polarity? High-speed interfaces are the reason, and the USB 3.0 interface is definitely a USB-C mainstay, if only because of how easy it is to implement.

Look for at least USB 3.0, which has a speedy bandwidth of 5Gbps compared to the lamentably sluggish USB 2.0’s 480Mbps. To fast-charge an iPhone, you need a minimum of 18W and it has to be USB-C ...