Check the listing for details. 3pcs Arduino SD Card Board Micro SD TF Card Memory Shield Module SPI 3pcs USA. Condition: New. Listed at 5.08 USD. Micro SD Storage Board Micro SD TF Card Memory Shield Module SPI for Arduino Features - Support Micro SD Card, Micro SDHC card (high-speed card) - The level conversion circuit board that can interface level is 5V or 3.3V - Communication interface is a standard SPI interface - Control Interface: a total of six pins (GND, VCC, MISO, MOSI, SCK, CS), GND to ground - VCC is the power supply, MISO, MOSI, SCK is the SPI bus, CS is the chip select signal pin - 3.3V regulator circuit: LDO regulator output 3.3V as level converter chip, Micro SD card supply - Level conversion circuit: micro SD card into the direction of signals into 3.3V, - MicroSD card toward the direction of the control interface MISO signal is also converted to 3.3V, general AVR microcontroller system can read the signal - Micro SD card connector: yes since the bomb deck for easy card insertion and removal - Positioning holes: 4 M2 screws positioning hole diameter of 2.2mm, easy to install positioning, to achieve inter-module combination Specifications - Power supply: 4.5V - 5.5V, 3.3V voltage regulator circuit board - Positioning holes: 4 M2 screws positioning hole diameter of 2.2mm - Control Interface: GND, VCC, MISO, MOSI, SCK, CS - Size: 42x24x12mm Package Included: 3 x Micro SD Storage Board Micro SD TF Card Memory Shield Module SPI for Arduino