Will a regular SD Card Reader work with An SDHC card?
From what I can determine a device has to specifically support SDHC in order for it to work. So, if you have an older non-SDHC reader it will not recognize the SDHC cards. From the Wikipedia entry: SD and SDHC compatibility issues As of early 2007, the simultaneous availability of non-standard 4 GB SD and 4 GB SDHC cards, and incompatibilities between SD and SDHC have caused confusion among consumers buying memory devices. SD and SDHC cards and devices have these compatibility issues : • Devices that do not specifically support SDHC do not recognize SDHC memory cards. • Some manufacturers have produced 4 GB SD cards that conform to neither the SD2.0/SDHC spec nor existing SD devices.