[Wireless] Troubleshooting - My USB printer won't connect
1. Please go to compatibility list for printer server on Global website and check if router supports user's printer model
Printer Support List:https://www.asus.com/event/network/Printer_Server/
2. Please confirm your router has the latest version of firmware.
[Wireless Router] How to update the firmware of your router to the latest version ?
3. Please check you have completed and operated printer utility normally.
You can refer to “EZ printer sharing” on Global website or on ASUSWRT(Only for Windows OS)FAQ
4. Try to set up printer by LPR protocol.
For Windows OS, Share your network printer - Microsoft Support
For MAC OS, Add a printer to your printer list so you can use it on Mac - Apple Support
How to get the (Utility / Firmware)?
You can download the latest drivers, software, firmware and user manuals in the ASUS Download Center.
If you need more information about the ASUS Download Center, please refer this link.