Fangrui Product Details Features: 1. For Onboard Interface, Suitable For Series Motherboards 2. 12c Interface Control, Which Can Switch 32 Different 12c By Changing 5 Address 3. Onboard Pca9685 Chip Can Output 12-bit Hardware Pwm To Control Motor Speed 4. Onboard Tb6612fng Dual H-bridge Motor Driver Chip, Works Efficiently And Is Not Prone To Heat Generation 5. The Onboard 5v Voltage Regulator Chip Can Output Up To 3a Current. It Can Be Connected To The Battery For Power Supply Through The Vin Terminal And Leads To The Unoccupied Pins Of For Easy Expansion. Description: 1. Working Voltage: 6-12v (vin Terminal) 2. Logic Voltage: 3.3v 3. Pwm Driver Chip: Pca9685 4. Motor Driver Chip: Tb6612fng 5. Control Interface: 12c Note: Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Not Affect The Use Size: About 65 X 56mm Material: Pcb Colour: As Shown Package Contents: 1 X Motor Drive Expansion Board Module Only The Above Package Content, Other Products Are Not Included. Note: Ligh Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.