MicroSD Card Adapter、6PIN、SPIです。
Module features are as follows:
1 Support Micro SD Card, Micro SDHC card (high-speed card)
2 the level conversion circuit board that can interface level is 5V or 3.3V
3 power supply is 4.5V ~ 5.5V, 3.3V voltage regulator circuit board
4. Communication interface is a standard SPI interface
5. 4 M2 screw positioning holes for easy installation