SPI Reader mini SD Memory Card TF Memory Card Shield Module for Arduino Support mini SD card (less than equal 2G), mini SDHC card (less than equal 32 G) (high-speed card)._x000D_ The level conversion circuit board, the level interface can 5V or 3.3V._x000D_ Power Supply 4.5V ~ 5.5V, 3.3V voltage regulator board._x000D_ Communication interface is a standard SPI interface._x000D_ Color: As shown_x000D_ Material: PCB, metal_x000D_ Size: 4.1x 2.4cm_x000D_ Control Interface:_x000D_ 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._x000D_ 3.3V regulator circuit:_x000D_ LDO regulator output 3.3 V level converter chip, mini SD card supply._x000D_ A level conversion circuit:_x000D_ mini SD card in the direction of the signals in 3.3 V, the miniSD card in the direction of the control interface MISO converted signal also 3.3V, can universal AVR minicontroller system read the signal._x000D_ mini SD card port:_x000D_ Since the bomb deck for easy card insertion and removal._x000D_ positioning holes:_x000D_ 4 M2 screws positioning hole diameter of 2.2 mm, the module is easy to install positioning in order to achieve inter-module combination._x000D_ Package includes:_x000D_ 1x Micor SD TF modules_x000D_ Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/-1-3cm. _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_