@pg35 

Hi, yes, Deco indeed works well with Verizon Fios ONT Ethernet.

But I see on the Verison Community that you might still need to contact Verizon to switch the WAN connection from MoCA to Ethernet first.

And If you have FiOS TV service with Verizon boxes, it gets a bit more complicated to use your own router as a MoCA LAN is required. 

---Using-a-Third-Party-Router-with-FIOS-Internet

---No-Ethernet-Port-on-my-ONT

Thank you very much.

best regards.