Operate the RPLIDAR A1 radar according to the user manual, why can't it be used?

①The USB power supply is insufficient; ②It is recommended to reinstall the serial port driver.

Remarks: In this case, the A1 lidar (SKU: DFR0315) will appear more frequently, and the A2 lidar (SKU: DFR0445) is equipped with USB and power supply, so the above problems are unlikely to occur.