Default MicroSD issue.

Just got this tablet yesterday. However, it is only now that I've decided to pop in an external card. When I put it in, nothing happens. No notification that a card has been inserted and nothing in the storage part under settings says there is a card inserted. Only the internal storage is displayed. To be sure, I've tried three different cards and the result is still the same. Is this tablet defective or am I doing something wrong?

P.S. - After a full format and not the quick one, tablet finally reads the card. Feeling sheepish here. Mods may delete this post. Thank you!