Micro sd card and 66i

More questions about the garmin 66i and the microSD 32GB card.  I checked the card formatting, it said FAT32 but reformatted it anyway - to FAT 32.  I have downloaded 2 maps onto the card.  I can import the maps into the Garmin website so I know the maps are on that card.  But when I put the card into the 66i, I do not know how to access it.  Where do you find the card on the 66i?  If I go to Bird's Eye, the maps I have downloaded all say 'internal' which they are, but I see no external or SD card or whatever it might say.  If Bird's eye is not where to access the memory card, where do you access it?  

Thank you, Pam