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 Micro-USB B, which is more adaptable. 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:BIGTREETECH 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 Logic Voltage:3.3V Motor Driver:UART mode of on-board TMC2209*4 Interfaces Of Motor Driver:XM,YM,ZAM,ZBM,EM 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 Micro-B type,easy to plug,communication baud rate 115200 File Format:G-code Recommended Software:Cura,Simplify 3D,Pronterface,Repetier-host,Makerware Onboard EEPROM:24C32 Double Z-axis interface:YES CNC Fan Interfaces:3 5V Power Supply:BL Touch,TFT and RGB interfaces,DCDC5V V1.0 Module Onboard 5V Power Supply:Yes Onboard Sensorless Homing Function:Yes Support:BL Touch,filament detection,power-off resume,automatic shutdown(PS-ON),etc,SD card offline printing,online printing,SPI, UART expansion, connect to Raspberry Pi through SPI, UART, USB (Type-C) virtual serial port Compatible:Ender 3,Ender 3 Pro,Ender 5,CR 10 Support Firmware:Marlin,Klipper Integrated:RGB color light strip drive circuit Type:3D Control board color:Black Material:plastic Package Contents: 1 x BTT SKR MIN