Home Forums Hardware discussions MicroSD Card SDR104 mode

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  • #306
    Beta-Pictoris
    Participant

    Espressobin has got a UHS-I uSD card reader: https://en.wikipedia.org/wiki/Secure_Digital#Ultra_High_Speed_.28UHS.29_bus
    What are its supported modes ?
    Can this card reader work at 208Mhz and transfer up 104MB/s ?

    #439
    0000
    Participant

    According to the FAQ there are no limit within the specs. I haven’t tested it yet.

    SD CARDS AND STORAGE

    What minimal size of SD card do I need?

    No size limitation on our end, we will support any SDHC card that meets the specifications.

    What max size of SD card can it support?

    No size limitation on our end, we will support any SDHC card that meets the specifications.

    Having said it, in other SoC forums, like https://forum.pine64.org, there are a lot of people running into SD card quality issues. Not every USH-1 / class 10 cards are the same and worked well with that platform.

    http://elinux.org/RPi_SD_cards#Performance gives some information how to test read/write speeds with sdcards.

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