Features: Same as the original- SD-WiFi, the purpose is to facilitate customers to remotely upload- files to the printer for printing operations; Based on ESP32, it provides more possibilities. In addition to our default websever firmware, in fact-, we can- also develop webdav or adapt esp3d firmware to achieve more- functions; SD WIFI PRO draws out the redundant pins-. In addition to being used for programming, it can also be used for printer control through the serial- port, so as to realize many operations such as remote uploading files and sending printing commands; Not only a product, but also a product development kit; The circuit code is fully open source; Specifications: Appearance: with SD7.0 shell-, multiple PIN leads Main control: ESP32-PICO-D4, based on ESP32, Xtensa LX6 dual-core, 240Mhz, 150M WIFI, built-in 4MB Flash, 520KB SRAM-, support Bluetooth-compatible Rate: 150M Storage space: Comes with 8GB=64Gb high-speed storage Burning method: with a dedicated development board Firmware support: Web Server- /ESP3D, WebDav (under development) Package Includes: 1 PC SD WIFI PRO with Card-Reader Module 1 PC 8GBSD Card note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.