: This module (MicroSD Card Adapter) is a MicroSD Card reading and writing module, through the file system and SPI interface driver, the single-chip microcomputer system can complete reading and writing of the MicroSD Card files. Users can directly use the IDE's SD card library to complete the card initialization, reading and writing. Module Feature: 1. Support Micro SD Card, Micro SDHC card (high-speed card). 2. On-board level conversion circuit, that means the interface level is 5V or 3.3V. 3. Power supply is 4.5V-5.5V, Onboard 3.3V voltage stabilizing circuit. 4. Communication interface is a standard SPI interface. 5. 4x M2 screws positioning holes for easy installation. Package Included: 2x Micro SD TF Card Shield Expansion Board

Power supply is 4.5V-5.5V, Onboard 3.3V voltage stabilizing circuit. On-board level conversion circuit, that means the interface level is 5V or 3.3V. SPI Interface: A total of 6pins (GND, VCC, MISO, MOSI, SCK, CS), GND toground, VCC is the power supply, MISO, MOSI, SCK is the SPI bus, CS is the chip select signal pin. The module (MicroSD Card Adapter) is a Micro SD card reader module, and the SPI interface via the file system driver, microcontroller system to complete the MicroSD card read and write files. Type: 2pcs Micro SD TF Card Shield Expansion Board, Support Micro SD Card, Micro SDHC card (high-speed card).