Updates MCU to STM32F407VET6 Faster speed and more resources to support more powerful functions.Compatible with U disk and TF card printing, U disk is more convenient to use than TF card.Supports Virtural USB Device function Connect the computer with a USB cable, you can read and write on the computer as if the motherboard is a USB disk.Supports many types of LCD MKS TS35/MKS H43/LCD12864/LCD2004.Reserve serial port Using other serial devices, such as MKS H43 serial screen, will not conflict with other devices.Motherboard model: MKS Nano V3.1MCU: STM32F407VET6 (168MHz)FLASH/RAM: 512KB Flash/ 192KB RAMcolor:BlackMaterial:PCBPackage Contents:1 x Motherboard1 x Touch ScreenOnly the above package content, other products are not included.Note: Light reflection 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.