Features:

• included level shifting hardware.
• this board allows you to utilize a microSD card at Arduino’s SD library’s top speed on a 5V system.
• With this small breakout board, that is not much bigger than your fingernail, adding mass storage to your project will never be easier.
• This breakout is also a bit unique in that it level translates all of its outputs back to the level of the hardware it’s connected to.