USB to ESP8266 Module Wireless Wifi Module Development Wifi Board Adapter Product Description 1.This adapter board is mainly used to facilitate the ESP8266 through the serial port to connect PC. 2Using CH340 to serial chip, stable performance, good compatibility, Windows system basically all support. 3.Adapter board integrated 1000uF solid capacitors to ensure that the current supply, not because of power problems so that WIFI module crash without response. 4.Using 3225 chip crystal, to enhance the stability of the serial port, and beautiful tall. 5.This module is only USB to serial module, is only responsible for the USB interface into ESP8266 module for the serial port.