This Test Board Burn Fixture which is suitable for burning the program on the standalone module without any soldering this board is for any board like  Anxin ESP-12S/12F/12E/07S/07 and so on, the module has a connector for receiving the ESP8266 module, all IO ports have led can be used as the minimum system board or small-batch burn with the fixture.

Board supports firmware one-click download function and added burn.
Mode indicator (blue light) and serial communication indicator (green light).
Installed a serial chip CP2104 driver
Use the module that burned the firmware, and press the power switch, the red indicator light.