The 20 ports 4pd+16qc charger(400w) has a total of 20 ports, including 4 PD (power transmission) ports and 16 QC (fast charging) ports. The pd/qc charger is designed to provide fast charging for devices that support the PD standard (such as updated iPhone and Android devices). On the other hand, the QC port is designed to provide fast charging for devices that support QC standards (such as many Android devices). This type-c pd/qc charger is compact, portable, compact and portable. The black finish makes its appearance fashionable and modern, suitable for any decoration. In general, the 20-port 4pd+16qc charger is a powerful charging solution that can help you keep all your devices charged and ready for use. Whether you are at home, in the office or on the road, this charger is definitely a valuable supplement to your technology arsenal.