Features: The SB CAN Tool Board is a highly integrated printhead control board, based on STM32F072, running Klipper firmware. Onboard 1M CAN transceiver, onboard TMC2209 stepper motor driver, AXL345 acceleration sensor, and other necessary interfaces. Comes with 2.5m 4-core cable, 2x16AWG+2x24AWG for easy out of the box use. Comes with terminals housing and wire crimping tabs. Highly integrated printhead control board, easy to use, stable and reliable. Specifications: Material: Printed Circuit Board Color: Black Features: 1x 1A MAX-PWM interface for controllable fan (default 5V power supply, VIN-optional) 1x 1A MAX-PWM interface for controllable fan (default VIN-power supply, 5V optional) 1x signal input interface (VIN-power supply, with level conversion) 2x signal input and output interface (5V power supply, with pull-up resistor) 1X 5V single wire RGB interface (1A MAX) 1x 4A-MAX PWM output for heating rod 1x ADC interface for heating rod temperature acquisition MX3.0 2X2 interface for power and CAN signal access 1x Micro-USB for firmware uploading Note: Please allow 0-1cm error due to manual measurement. make sure you do not mind before you order. Please allow slight chromatic aberration due to different display resolutions. Package includes: 1x SB CAN Tool Board