Increase SPI output port +3.3V power supply, external SPI sensor power supply voltage +3.3V and +5V optional. PC communication USB interface is changed from Mini USB to -USB B, which is more . Increase the power supply of the SPI output port, support the motherboard to directly supply power to the peripherals. Onboard TMC2209 mute driver UART mode, support mute printing. Increase the thermistor interface protection circuit to prevent burning of the main control chip. Brand Name: Item Type:Motherboard Model Number:SKR MINI E3 V3.0 Product Size:103.75 x 70.25mm Board Layer:4 MCU:STM32G0B1RET6/STM32G0B0RET6 Power Input:DC12/24V Voltage:3.3V Motor Driver:UART mode of on-board TMC2209*4 Interfaces Of Motor Driver:,,,ZBM, Interfaces Of Temperature Sensor:TH0,THB,2-way 100K NTC(RTD) Matched Display Screen:2.4-inch TFT,3.5-inch TFT,Ender3 LCD12864 screen,etc. PC Communication Interface:USB -B type,easy to plug,communication rate 115200 File :G-code Recommended Software:, 3D,Pronterface,Repetier-,Makerware Onboard EEPROM:24C32 Double Z-axis interface:YES CNC Fan Interfaces:3 5V Power Supply: Touch,TFT and RGB interfaces,DCDC5V V1.0 Module Onboard 5V Power Supply:Yes Onboard Sensorless Homing Function:Yes Support: Touch,filament detection,power-off resume,automatic shutdown(PS-ON),etc,SD card offline printing,online printing,SPI, UART expansion, connect to through SPI, UART, USB (Type-C) virtual serial port Compatible: 3, 3 Pro, 5, 10 Support Firmware:,Klipper Integrated:RGB color light strip drive circuit Type:3D Control board color:Black :plastic Package Contents: 1 x SKR MINI E3 V3.0 32 Bit Motherboard 1 x cable(random color, cannot the specified color) Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.