Currently, the commonly used USB type-c interface uses the USB protocol, which varies in bandwidth and speed depending on the version of the USB protocol. In addition to the USB protocol, there are also PD protocol, DP video transmission protocol, HDMI video transmission protocol, etc. The USB Type-c interface with power supply, video output, and data transmission is commonly referred to as a fully functional USB Type-c interface.

The USB Type-c motherboard has a total of 24 pins, so a fully functional USB Type-c cable means that the cable has 24 strands.

If the promotional page only introduces 4-core, then it must only have charging function or USB 2.0 speed, not a fully functional USB Type-c cable.