Secure Digital High Capacity

What Does Secure Digital High Capacity Mean?

Secure Digital High Capacity (SD High Capacity or SDHC) refers to a type of SD flash memory card known as SD 2.0. It includes higher memory storage capacity, ranging from 4 GB to 32 GB. SDHC is not compatible with the SD memory slots designed for older versions.


Techopedia Explains Secure Digital High Capacity

SD High Capacity cards are a memory card format manufactured by the SD Card Association for cameras, handhelds, phones, tablets, mp3 players and other small devices where large amounts of memory are required for multimedia files and storage. Introduced in 2006, it was the next in line of MultiMediaCards (MMC). More than 8000 models and dozens of types of products have SD card slots for the Secure Digital standard, which is maintained by the Secure Digital Association (SDA). SD 2.0 incorporates a high-speed bus, which doubles the speed already available to give a speed of 25 MB/s.


Related Terms

Margaret Rouse
Technology Expert

Margaret is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical business audience. Over the past twenty years, her IT definitions have been published by Que in an encyclopedia of technology terms and cited in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine, and Discovery Magazine. She joined Techopedia in 2011. Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages.