Perfect Companion for ESP8266: a USB-to-serial module that converts the USB interface to a serial port suitable for ESP8266
Using CH340 Serial Chip: more stable performance, powerful compatibility, support all Windows system
The main purpose is to connect ESP8266 and computer PC via serial port
Little Tip: you need to solder a pushbutton across the ground and GPIO0 pin. Only need to hold the button for a few second as you plug it into a USB port then you can let go and the ESP is in program mode
For more information on this device you can google "All in one ESP-01 to USB converter" The first result is a page on the esp8266 wiki with great information. They have details on getting into programming mode, and links for the CH340 drivers if you need them
USB to ESP8266 Serial Wireless Wifi Module Developent Board 8266 Wifi Adapter
Using CH340 serial interface chip, stable performance and good compatibility.
1000uF polymer capacitor ensures power supply so WiFi module will not crash because of power problems.
Using 3255 crystal oscillator, which can enhance working stability of serial port.
Used for connecting ESP8266 and computer via serial port.
Transfer a USB port into a ESP8266 serial port
High speed CPU frequency,Can be used as a serial port WIFI
This module simply turn USB serial port module, is responsible only for ESP8266 module converts USB interface for serial ports.
Knowledge of all the WiFi please check relevant information using the ESP8266 module!!