SD card

What is SD card?

Secure digital memory card

Secure Digital (SD) is a nonvolatile memory card used extensively in portable devices, such as mobile phones, digital cameras, GPS navigation devices, handheld consoles, and tablet computers.

Types of SD cards:

Different capacities of SD cards

It's not just the physical makeup of the card that's standardized. SD cards also come in different capacities.


  • SD - Standard format with up to 2 GB per card, available in all three sizes, under $10
  • SDHC - High-capacity format with 4 to 32 GB per card, available in all three sizes, $10 to $100
  • SDXC - eXtended capacity format with 32 GB to 2 TB per card, available in the larger and micro sizes only, starting around $80