SD card

Updated: 08/16/2021 by Computer Hope

Short for Secure Digital card, the SD card is one of the more common types of memory cards used with electronics. The SD technology is used by over 400 brands of electronic equipment and over 8000 different models, including digital cameras and cell phones. It is considered the industry standard due to the wide use.

Types of SD cards

The three versions of the SD card, with their physical dimensions, are shown below.

  • SD - 32mm x 24mm x 2.1mm.
  • MiniSD - 21.5mm x 20mm x 1.4mm.
  • MicroSD - 15mm x 11mm x 1.0mm.

SD card examples

How can I read an SD card on a computer?

A desktop and laptop computer can read any SD card as long as it has a card reader capable of reading the desired size of SD card. If your computer does not have an SD card reader, or one with the wrong slot size, an external USB (universal serial bus) card reader may be purchased.

Camera terms, Computer acronyms, Memory cards, Memory terms, MicroSD, MiniSD, Phone terms, Removable disk, SD, Storage device