Quimat Arduino UNO R3 ATmega328P CH340 Development Board Compatible Arduino IDE Development Kit Microcontroller with USB Cable Straight Pin Header 2.54mm Pitch Robot Parts Upgraded UNO R3, 100% Compatible with Arduino, works with the software at arduino.cc Main Chip: ATmega328P, CH340G. Please contact us if you need the CH340 driver Completely solves the traditional incompatible and instability of the UNO R3 to Win7 and Win8 system Supports both 3.3V & 5V Power Supply and can meet different IO expansion requirements, including temperature humidity sensor, Xbee module, BT Bluetooth module, RF module, GPRS module, GPS module, LCD shield and so on Easy to use, With pins socket for inserting DuPont wire.