The cable is designed to power devices from a Type C plug
Power/Charge Technology USB PD Rev.2 (USB Power Delivery)
The USB-C cable does not have such concepts as "connector-A" or "connector-B" - the connectors are now the same in all cases.
Device roles are denoted by new terms:
DFP is an active, powered device (like a USB-A port)
UFP - passive, receiving device (like a USB-B port)
DRP is a "two-faced" device that dynamically changes its status.
The distribution of roles is carried out by setting a certain potential on the CC contact using one or another resistor:
The active device (DFP) is identified by the resistor between the CC and Vbus pins.