Features: Main changes from the older version: Add two rows of the holes for the pins. So it can be connected with normal Dupont line. Add 3 rows of the holes for wiring. Change the in-line package of ATMEGA328P to flat package. CH340G replace ATmega16U2 Testing: We program & test all devices with LED blinking Program. Please make sure to connect the device to USB & test if the LED-"L" is blinking, This shows the device is working perfectly (Don't modify program without completing this preliminary test). Usage Instructions: Install CH340 USB Driver (Download: http://goo.gl/NWEz9O ) Connect Board to Computer & Launch Arduino IDE. Select board as "Uno" in Arduino IDE. Select the COM port (You can know COM Port No. in Control Panel > Device Manager). Start burning your programs. Technical Details: Microcontroller: ATmega328 Digital I/O Pins: 14 ( of which 6 provide PWM output) Analog Input Pins: 6 DC Current per I/O Pin: 40mA DC Current for 3.3V pin: 50mA (ATmega328) of which 0.5KB used by bootloader SRAM: 2 KB (ATmega328) EEPROM: 1 KB ( ATmega328) USB Chip CH340G Package Content: 1 X Piece Arduino UNO R3 Compatible Development Board - ATmega328P CH340. 1 X USB Cable Dupont Pins