'''2.''' Look for the ''SD-card holder cover'' in the wiring bag. This little piece of plastic is just to make sure you can't accidentally push the SD card into the gap between its slot and the case, thus losing it.
+
But ... can this happen? Well, it's not easy, but we provide this nice piece of plastic for a reason ;-)
'''3.''' Plug the ''SD-card holder cover'' on top the SD-card holder. Please, put attention to the orientation. The tiny plastic feet must get inside the 2 corresponding tiny holes, then push slowly until it's totally inserted. It should get clipped. Once it's inserted, don't try to remove it or you probably would break the little plastic feet. This is a one-time operation.