HIKVISION DS-7104HGHI-SH User Manual page 115

Figure 7. 24 USB Flash Drive Management
Click New Folder button if you want to create a new folder in the backup device.
Select a record file or folder in the backup device and press button
Select a record file in the backup device and press button
Click Format button to format the backup device.
If the inserted USB device is not recognized:

Click the Refresh button.

Reconnect device.

Check for compatibility from vendor.
 Management of USB writers
Figure 7. 25 USB Writer Management
Click Erase button if you want to erase the files from a re-writable CD/DVD.
 There must be a re-writable CD/DVD when you make this operation.
 If the inserted USB writer is not recognized:

Click the Refresh button.
User Manual of Digital Video Recorder
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if you want to delete it.
to play it.