1. Ultra-quiet. 2. Large heat sink, good heat dissipation. 3. Support unlimited return to zero function. 4. Set UART mode by setting jumper cap instead of soldering on MKSSGEN_L, MKSGEN L, MKS Robin Nano V3 to support UART mode.<br><br>Product Introduction Tmc2226 has all the functions of tmc2209 and can completely replace tmc2209. At the same time, the package of tmc2226 is HTSSOP, which has better heat dissipation performance at the same current. It generates less heat, supports larger current, and supports unlimited return to zero function. Due to different batches, there may be differences in product appearance, color, and printed text, which will not affect the use. Colour:Black+Blue Material:PCB<br><br>Package Contents: 1 x MKS TMC2226 Stepper Motor Driver<br><br>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.