Beyonwiz DP-S1 - Manual (Page 48)

Quick Setup
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3-6. Windows Sharing
You can set account information of the ID and password to share files in
the shared folder on your PC, which is blocked to access for the “Guest”
account and requires an ID and password to access.
You also have to set account information to backup the recording files
on the DP-S1 to the PC via network; the “Guest” account is not allowed
to copy files to the shared folder.