ITEM NAME:Smart Electronics Reading Writing Module Memory Card Module Slot Socket Product Description Description: Smart Electronics Reading Writing Module Memory Card Module Slot Socket SPI Interface Reader ARM MCU Feature: All Memory Card SPI pin outputs: MOSI, SCK, MISO and CS for further connection By programming, you can read and write Memory Card. Make your Memory Card application easier and simpler. Specification: Input voltage: 3.3V/5V Packaging size: 100*57*8mm/3.93*2.24*0.31'' Note: Please allow 1-3mm differs due to manual measurement. Due to the different display and different light, the picture may not show the actual color of the item. Thanks for your understanding. Included: 1 X Memory Card Reading Writing Module.Due to the different display and different light, the picture may not show the actual color of the item. Warranty Service. If item is defective after 3 months, you can still send it back to us. We will send you a new one after receiving the defective item.