Supports mini SD cards (up to 2 GB) and mini SDHC cards (up to 32 GB, high-speed). Features a level conversion circuit board compatible with both 5V and 3.3V logic levels. Power supply: 4.5V–5.5V; includes an onboard 3.3V voltage regulator. Communication interface: Standard SPI. Color: As shown in image. Material: PCB and metal. Dimensions: 4.1 × 2.4 cm. Control interface: Six-pin header (GND, VCC, MOSI, MISO, SCK, CS). GND connects to ground; VCC is the power input; MOSI, MISO, SCK, and CS are standard SPI bus signals. 3.3V regulator circuit: Provides regulated 3.3V output for the mini SD card. Level conversion circuit: Ensures bidirectional 3.3V signal compatibility between the mini SD card and the host controller (e.g., AVR microcontrollers). Mini SD card slot: Designed for easy insertion and removal. Mounting holes: Four M2 screw holes (2.2 mm diameter) for secure module installation and integration. Package includes: 1 × Micro SD/TF module. Note: Colors may vary slightly due to lighting and screen settings. Dimensional tolerance: ±1–3 cm.