The Asus Eee PC and SDHC Cards

Now that it has been confirmed the Asus Eee PC accepts SDHC cards, I think it is time to provide a introductory post – for the benefit of readers unfamiliar with this new type of memory cards.

SDHC cards are the newest type of SD cards. They are based on the SD Card Association SDA 2.00 specifications. These new cards can have capacities up to 32GB. However, because SDHC works differently from SD cards, they are not backward compatible with existing SD card readers and requires new SDHC card readers. But the newer SDHC card readers can read older SD cards. To ensure compatibility, look for the SDHC logo on both the cards and the card readers or the devices themselves (cameras, PDAs, camcorders, etc.)

SDHC cards are further categorized based on speed. The SD Card Association has defined 3 classes. These 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.

And just like the standard SD cards which has mini-SD and micro-SD card derivatives, the SDHC cards also come in the mini-SDHC and micro-SDHC card formats. These will work with standard SDHC card readers when fitted with SDHC adapters.

As far as I know, the Asus Eee PC does support all types of SDHC card formats, speed class and size.

NOTE: SD, SDHC and the SDHC logo are trademarks.