cRIOs and sbRIOs will generally support SD cards that use the SD or SDHC standard. The maximum
capacity of an SD card using the SDHC standard is capped at 32GB (SD is capped at 2GB).
You can see a list of SD cards provided by NI
here.
Additional Information
While it is technically possible to use a higher capacity SD card that uses either the SDXC or SDUC Standards, this requires extensive Linux knowledge and additional Microsoft licensing as SDCX and SDUC relies on a proprietary Microsoft file system. Since this is not something National Instruments will be able to support, it is highly recommended to use a supported SD card.