ITEM NAME:RobotDyn Micro- Sd Card High Speed Moduleï ¼Å’ 3.3V/5V Universal, For 3.3V And A8R1 RobotDyn Micro- Sd Card High Speed Moduleï ¼Å’ 3.3V/5V Universal, For 3.3V And A8R1 Micro- SD and MMC cards can be used with ease. Note that the motherboard has to have the FAT and FAT32 file system. Limit file size 2 gb. This type of Micro- SD module uses the SPI-based acceOnboard Oard uses IC buffer CD4050 high-speed communication. On board you can give the LED for power and LED for show of actions. On the bottom of PCB have instruction for connection. colour:black Material:metal+pc size:5*7*0.5cm Package Contents: 1*Micro- SD card high speed module.Micro- SD and MMC cards can be used with ease. Note that the motherboard has to have the FAT and FAT32 file system. Limit file size 2 gb. This type of Micro- SD module uses the SPI-based acceOnboard.