Epson WF-C5790 Series Instruction Booklet page 15

Hardware Setup Guide
❏ Make sure you entered the correct product key in the Web Config. The product key is paired with the serial
number. Access the content download site and acquire the product key if you do not know how to pair the
product key. The same product key is issued to one serial number.
https://openplatform.epson.biz/license-op/inputInformation.html
Solving Problems
15