HIKVISION HWN-2104H-4P User Manual page 126

Or you can select recording files you want to back up, and click Export button to enter
Export interface.
If the inserted USB device is not recognized:
 Click the Refresh button.
 Reconnect device.
 Check for compatibility from vendor.
You can also format USB flash drives or USB HDDs via the device.
Stay in the Exporting interface until all record files are exported with pop-up message box
"Export finished".
The backup of video files using USB writer or SATA writer has the same operating instructions.
Please refer to steps described above.
Network Video Recorder User Manual
Export by Normal Video Search using USB Flash Drive
Export Finished
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