Features: 1.Chip model: TMC2240 2.Compared to the TMC2209 driver, the current is higher and the heat dissipation is better 3.In the case of high-speed printing (with the same current), compared to other drives, the motor torque controlled by TMC2240 is greater and more powerful 4.This is an intelligent silent stepper motor drive module 5.The product is made of high-quality materials, with stable performance and long service life Product Introduction: TMC2240 is an intelligent silent stepper driver that defaults to SPI mode and supports a maximum effective current of 2.1A, current of 3A, and 4.5-36V DC power input. It supports the infinite zero return function. In the high-speed mode, the current change amplitude is very small to maintain sufficient torque, and the Counter-electromotive force protection circuit is integrated. Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Material: Metal colour: As shown Package Contents: 1 x Stepper Motor Driver Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.