On Mon, 6 Nov 2006, Bob Axtell wrote:

> The MMC card is just an SD card with an unlock feature missing, which
> also drops a pin.

The SD card has two extra pins, and supports a wider bus and higher
bus speeds, unless you're talking about MMC 4.0, which has a wider bus
than SD.  MMC is also mechanically thicker, so an SD card cannot be
inserted into an MMC slot.

--
John W. Temples, III
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