1PCS Mini WeMos D1 ESP8266 ESP-12F NodeMcu Lua WiFi Development Board CH340G
Open Tools → Board: xxx → Boards Manager and install esp8266 by ESP8266. Before you use miniD1 boards, you need setup CH340g driver. This is D1 mini, it is a mini WIFI board based on ESP-8266EX. Start Arduino and open Preferences window.