I put a 16gb card that works well on my pc. However I'm having trouble putting it to use on my tablet. My apps are being put in the 4gb flash which apparently is called SD on the settings. (Am I correct). When checking apps. Talked to a coby tech rep and he said the correct procedure was to put the apps on tablet with pictures movies music on the external sandisk card. For me thats a lot of space with 4gb although somwhat large is still filling up with apps. People doing things differently to utilize the 32gb of external usage. For example downloading kindle and somehow putting on the external sd card or putting amazon marketplace on the external card?