Review on 📚 HiLetgo 5pcs Micro SD TF Card Adapter Reader Module with 6Pin SPI Interface for Arduino UNO R3 MEGA 2560 Due by Adam Walsh

I use them a lot in my Arduino Uno and Arduino Mega projects. I've used 8GB and 32GB Class 4 or Class 10 microSD cards with no problems when using the Arduino's 5V supply. Although I was able to get them to work with the NodeMCU's ESP8266-based chip, in most cases the initialization step in the sketch failed. I suspect that the 3.3 volts provided by the ESP8266 node MCU is not enough. I will look for ways to power both the ESP8266 nodeMCU and the Micro SD TF card adapter from a 5V power supply to see if the Micro SD TF card adapter becomes as reliable as in my Arduino Uno and Arduino Mega projects. For now I've downgraded my overall rating by 1 star until I can verify that a 5V power supply solves the problem when connected to a nodeMCU ESP8266 project.