What should I consider when selecting a microSD card?

All of 4D’s devices that use microSD cards require cards that support the SPI protocol.

It is not ‘mandatory’ for manufacturers to support this protocol, but most do. Unfortunately, this is not usually explicitly labelled or shown, so it can be a challenge to find suitable cards.

For this, we highly recommend using our Industrial Grade cards, which supports SPI and Read Disturb Prevention technology.