* USB-C micro SD memory card reader for DJI Osmo Action 4. Plug it into the port on your DJI Osmo Action 4 then attach your Micro SD card. * Use the Micro SD, TF card reader to import photos directly from your micro SD card to your DJI Osmo Action 4. * It's the perfect accessory to go with your DJI Osmo Action 4.