The drive is compatible with 99 percent of the markets plug-and-drive 3D printer motherboards such as SKR V1.3/SKR 1.4 Turbo, MKS GEN L V2.0, I3 board.BIQU TMC2209 V1.2 is an ultra-silent motor driver IC compatible with two-phase stepper motors, it supports STEP/DIR and UART two working modes.TMC2209 run much cooler due to a large-area cooling pad which provides a current dynamic regulation technology that saves up to 75% of electrical energy.Adopts stealthChop2 ultra-quiet technology, it is quieter than any other driver like A4988, DRV8825, LV8729, Reducing the sound of your 3D printer considerably, even you can sleep right next to this printer at full speed without any disturbance.Potentiometer regulation instructions: First, rotate the potentiometer clockwise to reduce the Vref voltage. Second, rotate the potentiometer counterclockwise to increase the Vref voltage.Model: TMC2209Operating Mode: STEPIDIR or UARTPower Voltage (VM): 4.75V-28V DCPeak Current:2.8ACurrent RMS: 2AMax Microsteps: 256Microstep Setting:2, 4, 8, 16 (can be divided into 256)colour:Photo colorMaterial:PC+metalPackage Contents:5 x TMC2209 V3.1 Stepper motor driver5 x Heatsinks5 x Screwdriver1 x cable (the color is random, the specified color cannot be selected)Only the above package content, other products are not included.Note: Light shooting 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.