Features UART MODE SUPPORT: The stepper motor driver supports UART mode and is used in conjunction with MKS SGEN-L without the need for jumpers. GOOD PERFORMANCE The stepper motor driver board is extremely quiet, with high current, 256 micro step subdivision, and good heat dissipation effect. High current: thanks to the characteristic of low heat generation, supports a higher current, a maximum peak current of 2.5 A and a continuous return to zero. Easy to use: supports the Uart module by wearing a jumper cap instead of soldering it to the mks, with easy operation and good stability. SPARE PART: TMC2209 has all the functions of TMC2208 and can completely replace TMC2208 by supporting the sensorless feedback function. Specification: Item Type:Stepper Motor Driver Kit Material: PCB. Maximum current: 2.5 A. Input voltage: 5.5V-28V UART micro step setting: M0: ground. Package list: 5 x stepper motor drivers. 5 x heat sinks. Note: 1.Verf measures the GND and potentiometer voltage. 2. Do not connect the motor when measuring the voltage, otherwise the drive may burn out easily. 3. When measuring the voltage, please connect the power supply, not only the USB power supply. Package List 5 x Stepper Motor Driver 5 x Heat Sinks