I know this is a very special device but if you bother going to the reviews you're wondering what it can do. This is what you need for programming smaller chips. The ones that are just the ESP8266 and nothing else that you will add to a larger project. For example, if you're putting it in an IoT device to replace another chip, or a PCB assembly that doesn't have a USB connector, and you don't include serial pins. Make sure the USB cable is not connected. Don't plug it in or turn it on before adding the ESP8266. I've heard bad things can happen if you do this. I have a USB hub with port switches to reduce physical port wear and tear. You can see it in my other review. There are Chinese inscriptions on the board itself. It's not too important. Translations are in the photo. Reset and firmware buttons. LEDs - power supply and programming. It's essentially a temporary fixture, much like full development boards, except for a temporary one. I'm glad I got it. I have several projects that just need to add a pre-programmed ESP8266. This saves me a lot of unnecessary soldering. It also has pins that you can connect to if you need to work on it temporarily and don't want to use the development board.
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