Using this microSD adapter is super easy. First, find the SD card slot on your Raspberry Pi or compatible Macbook. Slide the green adapter into the slot. Then, insert your microSD card into the adapter. That's it - you now have extra storage! When you need to remove the adapter, use your fingernail to pull on the deep groove on the outer edge. Remember, the microSD card and Raspberry Pi are not included with this product. Also, this adapter will only sit flush with specific MacBook models, like the MacBook Air 13' (late 2010 – 2017) and MacBook Pro 15' (mid 2012 – early 2013). To keep your adapter in good condition, avoid getting it wet and don't expose it to extreme temperatures. If it gets dirty, you can gently wipe it with a soft, dry cloth.