WeMos D1 MINI ESP8266 ESP-12F WIFI Development Board CH340G TYPE-C/Micro-USB
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. a Micro USB connection.