Arduino Ethernet Shield microSD max size?

Using Arduino Storage
1

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?

2

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.

3

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).