This version is optimized on the version. It is mainly designed for foreign customers who have high requirements for product quality and functions. It not only ensures complete compatibility with the version, but also facilitates everyone to use. Advantage: Completely solve the incompatibility and instability of traditional 2560 boards on win7 and win8 systems. Under the condition that the main control chip ATMEGA2560-16AU remains unchanged, the usb chip 16u2 is replaced. The project team has its own ideas for launching products using ATMEGA8U2 and ATMEGA16U2 versions. In most applications, these USB interfaces The chip is only used as a serial port "brush" and communication. Using a professional usb chip can not only reduce the cost, but also meet the application well. Colour: blue Material: PCB Size: 9.7x5.3cm Package Contents: 1 * Development Board (without cable) Only the above package content, other products are not included. Note: Light 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.