BIGTREETECH SKR Mini E3 V3.0 Control Board with TMC2209 UART Stepper Driver New Upgrade 32Bit 3D Printer Silent Board for Ender-3, Ender3 Pro,...

Main Control Chip: Adopt STMicroelectronics' latest G0 series main control chip STM32G0B1RET6 or STM32G0B0RET6 Three CNC Fan: Increase the heat dissipation controllable fan to reduce the printer temperature when the device is working Increased Heat Sink: Redesign the drive heat sink, strengthen the drive heat dissipation capacity, and greatly improve the heat dissipation performance USB Micro B: The PC communication USB interface is upgraded from Mini USB to Micro USB B, which is more adaptable Output Power Supply: Increase SPI output port +3.3V power supply, external SPI sensor power supply voltage +3.3V and +5V are optional, support the motherboard to directly supply power to peripherals