Features: Adopted Raspberry PI arm Cortex-M0 + master control RP2040 drivers The fuse adopts the form of fuse holder + fuse, which is convenient to disassemble Type-C interface is used for main control communication brand new and high quality Support UART mode, with onboard TMC2209 driver. The main board is small and exquisite with beautiful appearance Specifications: Item: R4 Motherboard for Voron V0.1 Board Size: approx 86x48mm/3.39x1.89in Material:ABS+ Metal Board Layer: 4 Layers MCU: RP2040 Power Input: DC24v / DC12v Logic Voltage: 3.3v Driver: Uart Mode Of Onboard TMC2209 Motor Drive Interface: X, Y, Z, E Temperature Sensor Interface: 100k NTC With Raspberry Pi Communication Interface: Type-C, Serial Port Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. Package includes: 1 Set x R4 Motherboard