Will latest macbook air read SDHC cards /
It will read and write them just fine.
The only caveat is, that since the SD reader on the MBA is mated to a USB 2.0 bus, the read and write speeds will be at the SD card specification, and not the faster SDHC spec.
The 13-inch Air has an SD slot that reads SDHC cards. The 11-inch Air doesn't have an SD card slot at all, and requires an external card reader.
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