If the cameras can't detect the SD card, please try to troubleshoot it via the below step:
- Please make sure the SD card works properly by testing the write and read files functions on a computer via an SD card reader, then insert the SD card in the device.
- Please power off the device before inserting the SD card.
- The device only supports the FAT32 and exFAT format SD card. Please format the SD card into FAT32 or exFAT format on your computer before inserting it into the device.
- The SD card capacity is 8GB ~ 128GB.