"How to Insert and Remove the MicroSD Card from an Android Tablet:

External and removable storage is available on some Android tablets. The storage is in the form of a MicroSD card, which can be used for photos, videos, music, lesson plans, and so on.

The MicroSD card fits into a slot on the edge of your tablet but can also be inserted into your computer and read like any removable media card.

The MicroSD card can be inserted into the tablet whether the device is on or off. Follow these directions:

Locate the MicroSD card hatch on the tablet’s edge.
This is what the hatch looks like, although it may look subtly different on your tablet. The card may be labeled MicroSD.
Orient the MicroSD card so that the printed side faces up and the teeny triangle on the card points toward the open slot.
Use your fingernail or a paperclip to gently shove the card all the way into the slot.

The card makes a faint clicking sound when it’s fully inserted.