A:Answer You can purchase & use all the microSD cards you want (provided they're compatible w/this cam.), + you can free space on the SD cards as you wish once copied onto a computer drive or other media! I do all of that via a separate card reader/writer & various adapters. You can even work w/the video from this cam. via directly the card used to record; however, I would recommend only as source read, so you edit onto, copy, render, etc. to other drives. Also I wouldn't go back-&-forth in card usage. Keep them separately for the cam. once used in the cam. (so read only in computer, though you can delete files). Remember, card specs. get limited however to whatever connection method, i.e., a USB 2.0 media reader/writer limits the card to such speeds. Thus a Samsung mini USB reader/writer coming w/Samsung cards bundle, I found has USB 3.0, Verify the specs. though including computer USB specs.