1、VARIOUS FUNCTIONS: This is an on board for ESP32 wifi 3D printer master board. Support for Marlin2.0 firmware. In addition to ordinary LCD2004 and 12864 screens, also support for MKS MINI12864 V3 and for MKS TFT serial screens. The motherboard can update the firmware via USB, and connect to the network and web pages through WIFI function to control the 3D printer 2、TECHNICAL PARAMETERS: For ESP32 WROOM 32U(8M Flash) motherboard, built in for ESP32 DOWD V3 chip, for Xtensa dual core, 32 bit LX6 microprocessor, support clock frequency up to 240 MHz, 8192KBytes FLASH, 520KBytes RAM 3、POWERFUL AND EFFICIENT: The motherboard use for ESP32 WROOM 32U module, embedded dual core 32 bit high speed MCU, and integrated WIFI, Bluetooth module, performance is very powerful 4、SUPPORT FIRMWARES: The smart screen display for MKS MINI 12864 V3.0 memory card(not include) has an RGB backlight, allowing the light color to be changed online. Also support firmware such as for Robin v2 V3, for sgen‑IV1V2, for Gen‑loMarlin2.x, and for Klipper. With encoder, parameter adjustment can be realized, as well as file selection printing. Plug and play on for RAMPS, but firmware support need to be modified 5、STORAGE CAPACITY: The mainboard module has an 8 byte flash memory chip, which provide effective protection for more application scenarios