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Author Topic: Arduino Ethernet Shield microSD max size?  (Read 1116 times)
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Hi,

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?
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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.   
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Thanks.
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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