Features

• Compact size
• Supports reading & writing of all types of MicroSD memory cards
• SPI signals (CS, SCK, MISO, MOSI) available on header for easy connection to all Arduino, Raspberry-Pi & others
• Supports 3.3V directly and 5V through level shifters (level convertors)

NOTE: You shouldn't directly connect this module to Arduino with 5V TTL level. You'll need level shifters (level convertors) to protect the MicroSD card. You can directly connect this module to development board such as Raspberry Pi and NodeMCU which has 3.3V TTL level on GPIO pins.