Product descriptionSpecifications: Voltage: 4.5V~5.5V DC Current: 0.2~200mA Communication Interface: Standard SPI Interface Voltage Level: 3.3V or 5V Level Conversion Circuit: Convert Micro SD card signal into 3.3V, MISO signal of the control interface theis also converted to 3.3V, general AVR microcontroller systems can read the signal Features: Read and Write: With the kwmobile SD card module, you can read and write data on your for Arduino. Micro SD Card Connector: self bomb deck, easy card insertion. With 4 holes for M2 screw , it is easy to install Dimension:42mm x24mm x 12mm/1.65” x 0.94” x 0.47”(L x W x H) Weight: 5g Package Content: 3 x Micro SD Card Adapter