TipsOur charger block has 5 USB C ports. Charging separately and charging multiple at the same time will bring about a difference in power, and the power will be faster when charging alone. When you need to use one C ports, it is recommended to use the C1/C2 port, which can bring you 30W charging efficiency. When you need to use two C ports, it is recommended to use the C1/C2 and C3 ports, where C1/C2 provides you with 30W charging efficiency and C3 provides you with 20W charging efficiency. When you use the C1 and C2 ports at the same time, they will share 30W of power, which will slow down the charging speed.