Reminder: 1. Adaptive power output, does not support any fast charging, only supports 5V input, Type-C input, usb output 2. A not support data transmission function, and there is no response when plugged into the computer. 3. B supports data transmission and wireless mouse and keyboard. One interface in the front and three interfaces at the bottom of the back can transmit data. The six interfaces at the top can supply power and are equipped with two data lines 4. The product comes with a 1m Type-C input cable, and no plug is provided. 5. The power depends on the specifications of the charging head used. It is recommended to use a plug of 5V and 3A or above, and it is not recommended to use a device with power. Product Information: Product name: Retro block switch Interface type: Type-C, USB Product size: 161*53*43mm Product weight: 460g Power input: only supports 5V input Output power: depends on power adapter power Packing list: host + Type-C cable _x000D_