Review on 📡 MakerFocus ESP8266 OLED WiFi Development Board - 0.91 Inch ESP8266 OLED Display with CP2102 Chip, Arduino IDE Support, ESP8266 NodeMCU LUA Compatible by Jason Caldwell

There were initial difficulties uploading the sketches and we have contacted the supplier. They responded quickly with some helpful suggestions. The problem was a bad cable. If the board has a pre-installed program running but does not show up as Silicon Labs Bridge in Device Manager, there may be a driver or cable problem. I used the Windows 10 CP210x driver installer available from SL and found a micro USB cable that supports data transfer. The charge-only cables that come with many rechargeable devices will not work.