ITEM NAME:8Pcs SD Card Module Slot Socket Reader For PIC AVR STM32 MSP430 Description: This SD deck module leads the SD card pin for , STM32, MSP430 AVR PIC or 8051 and other single-chip connection for SD card to read and write. Only support 3.3v for C51 / STM32 / and other use SPI function and SDIO function, positive mark SDIO pin definition, the back side of the SPI pin definition, very easy to use SD Card module can make your SD application more easier and simple. It is easily interfaced as a peripheral to your sensor shield module. Through programming, you can read and write to the SD card using your . Specification: Material: Plastic Color: As picture show Size(LxWxH): Approx. 34x23x5mm/1.34x0.90x0.20inch Package Includes: 8 pieces SD Reader Modules Note: Pls allow an error of 1-3mm due to the difference of manual measurement..This SD deck module leads the SD card pin for, STM32, MSP430 AVR PIC or 8051 and other single-chip connection for SD card to read and write. Only support 3.3v for C51 / STM32 / and other use. SD Card module can make your SD application more easier and simple.