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Topic: Arduino Ethernet Shield microSD max size? (Read 2255 times) previous topic - next topic



i can't find what the maximum microSD size is for the Ethernet Shield.
And what speed class works? SDHC 2, 4, 6, 10?
Does class 10 make sense?


You can use any size SDHC card.  The max for SDHC is 32 GB.

The card class my not translate into performance.  Class 6 and 10 cards are optimized for large buffers and the high speed 4-bit SDIO bus.  These cards may not perform better than class 2 or 4 cards on the small memory Arduino with its slow SPI bus. 


Just was asking cause a lot of stuff out there does not work
with some class's and has GB limitation (like a lot of smartphones).

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