Sergio .... the question is what SD speeds does the Intel Edison module support? What is the fastest speed that the Edison Arduino shield will support?
In particular I'm designing a custom shield, and would like to support the fastest SD card that the Intel Edison module will support.
From Wikipedia: Secure Digital - Wikipedia, the free encyclopedia
| Bus interface | Card logo | Bus logo | Bus speed | Spec version |
|---|---|---|---|---|
| Default Speed |    | — | 12.5 MByte/s | 1.01 |
| High Speed | 25 MByte/s | 2.00 | ||
| UHS-I | |  | 12.5 MByte/s (SDR12) 25 MByte/s (SDR25) 50 MByte/s (SDR50, DDR50) 104 MByte/s (SDR104) | 3.01 |
| UHS-II |  | 156 MByte/s (FD156) 312 MByte/s (HD312) | 4.00/4.10[25] |