Epson WorkForce Pro WF-7820 All-in-One Inkjet Printer - Manual (Page 54)

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If your product has an option to set an administrator password, change the default administrator
password to deter access by unauthorized users to personal data stored on your product, such as IDs,
passwords, and contact lists.
Parent topic: Wi-Fi or Wired Networking
Wi-Fi Infrastructure Mode Setup
You can set up your product to communicate with your computer using a wireless router or access point.
The wireless router or access point can be connected to your computer over a wireless or wired network.
1 Epson product
2 Wireless router or access point
3 Computer with a wireless interface
4 Computer
5 Internet
6 Ethernet cable (used only for wired connection to the wireless router or access point)