About this item1.Original ATmega328P CH340 chip is used. Improved new version CH340G Replace FT232RL.2.LAFVIN Nano V3.0 card is 100% compatible with the Nano card, and fully compatible with Windows, Mac and Linux operating system.3.Works the same as original Nano, runs perfectly on programming software.4.Using Atmel Atmega328P-AU MCU, Support ISP download; Support USB download and Power.5.LAFVIN Nano CH340 controller is a compact board similar to the R3 board, smaller and breadboard-friendly than Diecimila.Specification:CH340G Replace FT232RL.Operating Voltage(logic level): 5V.8 analog inputs ports:A0 A7.14 Digital input / output ports:TX,RX,D2 D13.6 PWM ports:D3, D5, D6, D9, D10, D11.1 pairs of TTL level serial transceiver ports RX / TX.Support USB download and Power.Support for external 5V 12V DC power supply.Support power supply by 9V battery.Support ISP download.Package list:3 PCS Nano ch340 board3 PCS USB CableDear customers.--- After the purchase, if our products have any problem, malfunction, errors, etc., communicate with us through the request information of the free market. In this way, we will respond within 24 hours and solve any problem for you.It is recommended that you do not open the free market for claims.--- If you file a claim through the free market, you must wait 10 business days involved in this process. But if you communicate with us directly, the problem will be solved quickly and effectively.