The Xiaomi Smart Camera C500 Pro is compatible with microSD cards from regular manufacturers, preferably with special cards for surveillance cameras. A SanDisk Extreme PRO UHS-I V30 256 GB microSDXC card (U3) is generally suitable as it meets the requirements and does not exceed the maximum supported capacity of 256 GB.

It is recommended to format the card after inserting it into the device to ensure optimum compatibility and performance.