Features: brand new and high quality 1) The appearance of the motherboard is beautiful; 2) Arm Cortex-M0+ main control RP2040; 3) Using a new design heat sink to enhance heat dissipation and aesthetics; 4) SMD capacitors (Mlcc) use Murata capacitors; 5) The fuse adopts the form of fuse holder + fuse, which is easy to disassemble; 6) Type-C interface is used for main control communication. 7) Adopt board frame, optimal size design. Specifications: Appearance size: approx 85x56mm/3.35x2.2in Installation size: see Btt SKR Pico V1.0-SIZE.pdf Layers: 4 layers MCU: ARM Cortex-M0+ RP2040 Power input: for DC 12/24V Logic voltage: 3.3V Motor driver: UART mode of onboard TMC2209; Motor drive interface: X, Y, Z1, Z2, E Temperature sensor interface: TH0, Thb, 2-way 100K NTC (thermal resistance) Communication interface with Pi: TYPE-C, serial port. Second, the main board indicator light description After the motherboard is powered on: The red light of LED6 is the power indicator: the red light is on, indicating that the power supply is normal; LED4 red light is the hot bed HB status indicator: it is for always on when it is heating, and it is off when it is not heating; LED5 red light is the heating rod HE status indicator: it is for always on when it is heating, and it is off when it is not heating; LED1 green and red light is the numerical control fan FAN1 status indicator: on when it is on, off when it is off extinguish; The red light of LED2 is the status indicator of the CNC fan FAN2: it is on when it is turned on, and it is turned off when it is turned off. The red light of LED3 is the status indicator of the CNC fan FAN2: it is on when it is turned on, and it is turned off when it is turned off. LED7 lights are RGB lights, which can be set to light on or off or color. Package Includes: 1 PC x SKR PICO V1.0 3D Printer Motherboard note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.