Is there any extra contact for full pd fast charging?

Not all pd fast charges have one more contact. Pd(PowerDelivery) fast charging is a charging technology, which increases power transmission through USB-C interface and connector to achieve higher voltage and current, thus shortening charging time. Pd fast charging technology is formulated by USB promotion organization and supported by many equipment manufacturers. In the fast charging of pd, there is indeed a fast charging mode called "pd+", which has higher power output and needs to use a special charger and data cable. This charger generally has two USB-C interfaces, an output power supply and an input power supply. In order to realize this fast charging mode, some chargers and data lines need extra contacts to transmit higher power. However, not all pd fast charging devices need additional contacts. Most devices that support pd fast charging, such as smart phones and tablet computers, can be charged with standard USB-C interface and data cable. Only devices that require higher power output, such as laptops, need to use chargers and data cables with extra contacts. Therefore, when purchasing pd fast charging equipment, we should choose the appropriate equipment according to the specific needs.