Support Micro SD card, Micro SDHC card (high-speed card), on-board level conversion circuit, that is, the interface level can be 5V or 3.3V.
The power supply is 4.5V~5.5V, and the onboard 3.3V voltage regulator circuit.
The communication interface is a standard SPI interface, there are 4 M2 screw positioning holes for easy installation.
Control interface: a total of 6 pins (GND, VCC, MISO, MOSI, SCK, CS), GND is the ground, VCC is the power supply, MISO, MOSI, SCK are the SPI bus, and CS is the chip select signal pin.
Micro SD card holder: It is a self-elastic card holder, which is convenient for card insertion and removal.