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Model N/A Quantity 2 Color Blue Material PCB + Plastic + Copper Features 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. And one package contains two pieces£¬ lower cost Specification SD card reader module£¬ 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 Application Allows to read and write to the SD card using your Arduino through programming; Great for DIY project English Manual/Spec No Packing List 2 x Modules