Features 256 Micro Steps: Low in working noises, the internal 16 steps of the stepper motor driver chip is expanded to 256 subdivisions. Driving Current: Larger driving current, the maximum peak current can get to 2.5A, and the stable printing current can get to 1.7A. Perfect Fitting: Supports UART mode, the motor drive board is applicable to for MKS SGEN-L without jumper, useful and reliable. Stables Working: Comes with a heatsink, the step motor driver module enables good heat dissipation for higher working stability. Easy to Install: Designed to have a light weight and a compact size as well, the TMC2226 motor driver is very simple to install. Specification: Item Type: Stepper Motor Driver Material: Aluminum Alloy Output Current: 1.78A Recommended Working Current: 0.8A Microstep: 256 microstep subdivision Configuration: STEP, DIR OR UART. Load Driving Voltage Range: 5.5~38V IC Logic Working Voltage: 3V, 5V.  Package List:1 x Stepper Motor Driver 1 x Heatsink Package List 1 x Stepper Motor Driver 1 x Heatsink