Support for external 5V~12V DC power supply, Support power supply by 9V battery. ^^ The Nano is using the chips ATmega328P and CH340, Replace FT232RL. ^^ It is a smallest, complete, and breadboard friendly board. It has everything that Diecimila/Duemilanove has (electrically) with more analog input pins and onboard +5V AREF jumper. ^^ Comes with 10packs of Nano V 3.0 Micro Controller Module, each Nano V 3.0 Micro Controller module is equipped with 3pcs pin headers (2pcs 15pin headers +1pcs 6pin headers), no welding needed. ^^ Uses the CH340G instead of the FTDI FT232RL IC which can improve the transfer speed, increase the stability in windows and solve the issues with FTDI drivers bricking non-original chips, ATMEGA328P offers even more programming and data memory space.
It also has a pin layout that works well with the Mini or the Basic Stamp (TX, RX, ATN, GND on one side, power, and ground on the other).