NETGEAR WNDR3800 - N600 WIRELESS DUAL BAND GIGABIT ROUTER-Premium Edition Features Manual page 14

Step 7:
After connecting successfully, you can list your connected
devices. Note that you see one extra device, called admin,
whenever you log in as admin.
Step 8:
Click the Use for Backup button to complete your
selection.
Step 9:
Enter the password (password), and the backup begins.
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