Check the listing for details. 2pcs Micro SD TF Memory Card Reader Module with SPI interface For Arduino. Condition: New. Listed at 6.49 USD. 2 Pieces Micro SD Memory Card Storage Board Module with SPI Interface For Arduino This MicroSD Card Adapter module is a Micro SD card reader module with an SPI interface via the file system driver, requiring an Arduino (or comparable) microcontroller system to complete the MicroSD system to read and write files. Arduino users can directly use the Arduino IDE that comes with an SD card to complete the library card initialization and read-write. Features:Supports Micro SD and Micro SDHC cards (high speed card)The level conversion circuit board can interface with 5V or 3.3V levelsThe power supply input (Vcc) is 4.5V to 5.5V. The module includes an AMS1117-3.3 3.3V voltage regulator circuit to support the 3.3V level requirementsThe communication interface is a standard SPI interface4x M2 screw positioning holes (2.2mm diameter) for easy installation Interface Description:Control Interface: Six pin header (GND, VCC, MISO, MOSI, SCK, CS)GND: GroundVCC: DC power supply input - 4.5V to 5.5VMISO, MOSI, SCK: SPI bus, CS: Chip select signal pin 3.3V regulator circuit: AMS1117-3.3 LDO regulator output 3.3V for level conversion chip, Micro SD card supply Level conversion circuit: Micro SD card to signal the direction of converts 3.3V, MicroSD card interface to control the direction of the MISO signal is also converted to 3.3V, general AVR microcontroller systems can read the signalPackage includes:2x Micro SD TF Card Memory ModulePrinted specifications and usage documentation Get them faster! We ship in 1 business from our Colorado office for quick US delivery. Contact us for quantity/OEM pricing. Expand your DIY and Arduino-compatible development with these other Arduino-compatible development boards, shields and modules from Envistia Mall. We provide FREE USPS First Class Shipping with Tracking - Not Slow Economy Shipping