At the back of the home security camera head, you should see a rubber strip with “RESET” text on it. Pull up the rubber strip and you should find the micro SD card slot. Push the SD card all the way in with the metal strips facing up until you hear that it clicks into place. To remove the SD card, push the SD card in again and it should eject from the slot.
Note: if you inserted an SD card while the device is powered, you would need to restart (power off then on again) the device for the SD card to be recognized.