Two M2 screw holes : The module has two M2 screw holes with a hole diameter of 2.2mm for easy install positioning, to achieve inter-module combination
Self-elastic card slot : You can install / remove the memory card by pressing it lightly.
Easy communication : Easy and cost-effective expansion of your Arduino storage space via this SD card module. The SD card module interface is a standard SPI interface. Easy communication with the Arduino SPI protocol.