In ensuring the performance of the NANO and the main control chip ATMEGA328P unchanged
We replaced the USB chip, improve the download speed, increase the stability of playing in Win7 and Win 8
Better to use with expansion board
Package Included:1 x ATMEGA328P Improve Board Moudle
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.