Asic settings: controller current limit, low battery protection voltage, current limit and speed limit settings for each gear, etc. Power-assist settings: speed limit, power-assist starting current, power-assist slow-start level, rating current, etc. Pure electric settings: speed limit, starting current, switching between speed mode and power-saving mode, and setting the minimum and maximum voltage of the handlebars. The starting speed and speed of each gear can be adjusted according to personal preferences (set within the speed that the motor can achieve), and can also be set to power saving mode or power mode according to personal usage scenarios, but for the life of the motor, it is recommended not to set the Too high current limit to better protect the motor. Specification: Product name: Bafang central motor USB programming line programming line Applicable products: Bafang BBS01/02, BBSHD central motor Cable length: 58cm/22.83in, weight: 20g Features: 2.0USB interface, 5-pin female socket, high-performance chip, fast and stable transmission Packing List: 1*programming line