Double pin design， solid and durable， the back of the card board reserves the weld Micro SD Card， the user can add their own welding Micro SD card. Allows to read and write to the SD card using your Arduino through programming. Great for DIY project

Main Features:
Compatible with 5V， 3.3V two levels
Conveniently connect with Arduino， STM32， MSP430 or 8051 etc microcontroller to make SD card reading and writing
The back pf PCB board reserved one micro SD / TF card soldering port
Supports SD card up to 2GB