What is SDHC?

SD High Capacity (SDHCTM) card is the new SD™ memory card based on the SDA 2.00 specification, introduced by the SD Card Association. This new SDA 2.00 specification enables SD cards to reach higher capacities - 4GB-32GB. Because SDHC works differently then standard SD cards, this new format is not backwards compatible with legacy SD format host devices. More SDHC compatible devices are expected to be available in the second half of 2006. To ensure compatibility, look for the SDHC logo on cards and host devices (cameras, camcorders, etc.)

Compatibility with SDHC 4GB:

4GB SDHC cards can only work with SDHC compatible host devices. To ensure compatibility, look for the SDHC logo on the packaging. Please check with your device manufacturer for their current/future supported SDHC devices.

What is Class Speed Rating?

The SD Association has created and defined 3 speed classes to help you identify speed and performance capabilities/minimum requirements of SD/SDHC cards and the host products. The SD Speed Class Ratings specify a minimum sustained write speed for SDHC cards (

• Class 2: 2 MB/s
• Class 4: 4 MB/s
• Class 6: 6 MB/s

You can look for the Speed Class Logo to identify the performance class of your memory cards and host devices.

See also: Sandisk standard SDHC range to reach 8GB

Post Footer automatically generated by Add Post Footer Plugin for wordpress.

This entry was posted on Wednesday, March 28th, 2007 at 2:39 am. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.