1、STM32F446 CHIP: Printer main control board based on STM32F446 180Mhz for Voron Design 3D printers, using PT100 thermal, need to insert PT100 module. 2、SPI SUPPORT: 8 x TMC2209 V4.0 stepper motor drivers, support Uart and SPI. 4 layers PCB board, not easy to be damaged by long time use. 3、SUPPORT SYSTEM: 3D printer board support firmware for Klliper, for Marlin, for RRF, support system for Raspberry pi, for Spider. 4、8 CHANNEL PWM FAN: Up to 8 channel PWM fan (only use 1 extruder, no 12V/24V RGB), 2 channel RGB LED (12V and 24V optional), 1 channel 5V RGB LED (NEO PX/WS2812). 5、MOSFET OUTPUTS: 10xPWM power MOSFET outputs (1 for HotBed, 3 for HotEnd, 3 for Fan, 3 for RGB LED strip). Item Type: 3D Printer Motherboard Material: PCB Main Control Chip: STM32F446 32bit Main Frequency: 180mHz Stepper Motor Driver: TMC2209 V4.0 Support: WiFi Module Support Firmware: For Klliper, for Marlin, for RRF Support System: For Raspberry pi, for Spider Size: Approx. 75 x 155mm / 3.0 x 6.1in 1 x 3D Printer Motherboard 8 x TMC2209 8 x Heat Sink 1 x Power Cord 1 x Connection Cable 1 x Accessory Bag 1 x Screwdriver