Let me see if I can help this is your Micro SD card
Should have come in the box with the Mogul. This is where you put it in the Mogul
Its small so its a little hard to install just push it all the way in till the spring catches. To remove the card just push it back in a little and the spring will push it out. The card goes in face up or SD insignia towards the screen side of the mogul. It can only go in one way so don't force it if it doesnt feel right turn it over. Once installed it should show in file explorer as storage card. I hope this helps