Here you find a list of working microSD cards for the box. It seems to be very particular. Be sure you format your microSD with fat32.

Working #

SanDisk #

• 128GB SanDisk Ultra microSDXC I 1 A1
• 64GB SanDisk Ultra microSDXC I 1
• 16GB SanDisk Ultra microSDXC I 1
• 8GB SanDisk EDGE microSDHC I 4
• 2GB SanDisk microSD
• 32GB Micron microSDHC I 1
• 32GB Perciron microSD (noname Aliexpress)

Not Working #

Samsung #

• 512GB SanDisk Ultra microSDXC I 1 Class 10 U1 A1
• 32GB Samsung EVO Plus microSDHC I 1
• Intenso microSDHC 8GB Class 10

SD card extension #

For convenience a SD extension cable can be used to place the card in a better accessible way. A 25 cm cable is recommend.

You can use both types of cables:

• microSD card – microSD card
• microSD card – SD card

Cable modification #

Out-of-the box the cable is not working because of the resistor between VDD (3.3 V) and CLK. The reason for that is unclear.

It is necessary to remove this resistor.