Feature:1. Based: Based on STM32F446 180Mhz, all IO can withstand 5V voltage. Supports 8 TMC stepper drives, supports Uart and SPI2. Voltage: Maximum 28V input, 12V at 5A DC‑DC, 5V at 8A DC‑DC (dedicated to for ), 3.3V at 0.8A LDO3. Choice: Limit switch socket 24V/5V/3.3V optional, prepare more other devices, such as inductive sensor, BL‑touch4. Power Output: 10X PWM power MOSFET output (1 for HotBed, 3 for hot end, 3 for fan, 3 for RGB LED strip)5. PWM Fan: Up to 8 channels PWM fan (only 1 extruder, no 12V/24V RGB), 2 CHANNELS RGB LED (12V and 24V optional), 1 channel 5V‑RGB LED (Neo‑ /WS2812)6. Compatible: RepRapDiscount SmartController compatible pin onboard connector, UART1 for pin row (including 5V@8A power supply)Specification:Item Type:3D Printer MotherboardMaterial: PCBPCB Layers: 6 LayersMaster Control: STM32F446Motor Driver: 8 x TMC2209Flash Memory: 512KDc Input: 12V at 3A DC-DCFor Raspberry Pie Power Supply: 5V at 5A DC-DCFuse: 2 + 13.3 Power Supply: 2 (MUC and Motor Supply Power Respectively)High Voltage Drive Interface: 2Drive Tvs: 8Thermistor Plug: 6 x 2pinHeating Rod: 4NC Fan: 6Normally Open Fan: 2Support: Wifi ModuleSupported Firmware: For Klipper, For, RRFSupport System: For, SpiderPackage List:1 x3D Printer Motherboard8 x Integrated TMC22098 x Heat Sink1 x Type C Wire1 x Connecting Wire30 x Pin Housing1 x Connector