1.It is convenient to upload files remotely to the printer for printing operation 2.Based on ESP32, it provides more possibilities. In addition to the default websever firmware, you can also develop webdav or adapt esp3d firmware to achieve more functions 3.SD WIFI PRO draws out the extra pins, in addition to being used for programming, it can also be used for printer control through the serial port, so as to realize remote uploading files, sending printing commands and many other operations;Can also be used in scenarios other than 3D printing 4.Used for file sharing, such as quickly transferring photos from the camera to the phone without a data cable 5. Not only a product, but also a product development kit 6.More professional product appearance 7.The circuit code is fully Colour:black Material:plastic Package Contents: 1 x Printer Parts 1 x 8G Card Only the above package content, other products are not included. Note: Light reflection 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.