SD-CARDS.NET

Secure Digital High Capacity or SDHC SD card is modern day technology from the SD standard. With this we have more storage which is up to 32GB. These cards have the same electrical interface as well as physical situation which you can see in older SD cards. Which make these cards also to support the old SD card digital devices. These cards have new addressing technique which is sector addressing than the older SD cards which was byte addressing. This sector addressing has the capability to hold 2TB data but currently its limits are only 32GB but hopefully it will increase in near future.

SDHC Speed Classes

These high speed SD cards have mainly three classes of speed. Class 2 which can transfer data up to 2MB per second, class 4 which can transfer data up to 4MB per second and class 6 which can transfer data up to 6MB per second. With these new high class speed standards the manufacturer of digital devices can access the fragmentation in card and easily calculate the speed of writing data in every part. Here is a simple table, where you can have an idea about the speed in x specification.

• Class 2: 2MB per second or 13x
• Class 4: 4MB per second or 26x
• Class 6: 6MB per second or 40x

These SDHC cards are in high demand in the market of digital photography because of higher rate of transfer data. With their high data holding capacity plus addition of various and different digital content types, these are hot amongst the video makers and photographers. With passage of time more and more digital devices are converted on these SDHC SD cards like photo printers. You can also use these SDHC cards in SD enabled digital devices with upgraded firmware.