UNO R3 development board MEGA328P CH340 CH340G For Arduino UNO R3 Without USB Cable0

This version is optimized in the original version , mainly for foreign customers on product quality and function under demanding conditions designed to ensure both consistent and compatible with the original , but also easy to use.
Advantages: a completely solve the traditional UNO board is not compatible with win7 and win8 system instability above .
2 increased pin socket , to facilitate the use of DuPont line .
3 replaces the 16u2, so the cost is reduced by half, consumers get the maximum benefit