The 4TB capacity doubles that of the largest microSD cards, earning it the title for the world's largest removable memory card. It's a giant leap from the 32MB of storage SD cards boasted in 1999.

The original SD memory card, which is the largest in the SD lineup. See SD card. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction requires permission.

The SD card in your camera needs to be large enough and fast enough for the way you shoot. Beginners and professionals will have different requirements, as will photographers and videographers.

To find out why, we need to take a look under the hood at how SD cards deal with storage capacity. A rare 4 GB card produced piror to the ratification of SDHC. Compatibility of such cards is ...