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:MotherboardModel Number:SKR MINI E3 V3.0Product Size:103.75 x 70.25mmBoard Layer:4MCU:STM32G0B1RET6/STM32G0B0RET6Power Input:DC12/24V Voltage:3.3VMotor Driver:UART mode of on-board TMC2209*4Interfaces 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 115200File :G-codeRecommended Software:, 3D,Pronterface,Repetier-,MakerwareOnboard EEPROM:24C32Double Z-axis interface:YESCNC Fan Interfaces:35V Power Supply: Touch,TFT and RGB interfaces,DCDC5V V1.0 ModuleOnboard 5V Power Supply:YesOnboard Sensorless Homing Function:YesSupport: 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 portCompatible: 3, 3 Pro, 5, 10Support Firmware:,KlipperIntegrated:RGB color light strip drive circuitType:3D Control boardcolor:BlackMaterial:plasticPackage Contents:1 x SKR MINI E3 V3.0 32 Bit Motherboard1 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.