Nano V3.1 Compatible with Arduino Nano V3.0 Arduino IDE Mini TypeB Nano Board LGT8F328P Nano 3.0 Controller
https://www.vogueparade.com/shopping/EN/200386159/1/1005003387072120/nano-v31-compatible-with-arduino-nano-v30-arduino-ide-mini-typeb-nano-board-lgt8f328p-nano-30-controller//