Step 4 - Now get your new Memory modules and carefully insert it into the Memory slot making sure that the notch is on the left hand side when inserting it in. You will then need to push them in quite firmly untill you hear it click into place. Repeat this step again for the second Memory module.
After installing the two Memory modules into your MacBook, you need to make sure that they are both intact, as you can see from the image.
