Feature 1 Upgrade Type: This 3D printer motherboard is an upgrade from the previous model, which means that this motherboard can have a newer performance on the machine with the same repository just by modifying the motherboard type to compile the relevant firmware. 2 Anti Interference Performance: The 3D printer motherboard has anti interference ability, which will make the machine play more stable and make the working process more great. 3 Schottky Diode: Schottky diode made by using the principle of metal semiconductor junction formed by metal semiconductor contact is added to the temperature measurement circuit and MOS circuit, which makes the switching frequency high and the forward voltage lower, which can make the operator more comfortable during operation. 4 Easy to Carry: This 3D printer motherboard is more portable, you can carry it with you when you need to replace it, and it can be easily stored when not in use, saving space. 5 TVS Protection: TVS protection is added to the power supply input, allowing high performance protection devices to achieve high performance protection, high transient power, low leakage current, low breakdown voltage deviation, easy control of clamping voltage, and no damage limit.Item Type: 3D Printer Parts SetMaterial: Electronic ComponentsMicrocontroller: STM32F407VET6 (168 MHz)Flash: 512 KB FlashMemory: 192 KB RAMWIFI Connectivity: USART1, SPI2Virtual USB Device: SupportPulse Width Modulation TTL: SupportStandalone Serial Port: supported (UART3)Power TVS Protection: YesEEPROM: 4KB AT24C32DMSPI Flash: 8M W25Q64JVSIQ Package List1x MKS Robin Motherboard 1 x USB Data Cable25 x Jumper Cap