I plug my Netgear router into the FIOS router because the older FIOS router did not have great wifi.
I am using an Asus router. I asked Verizon at the time of installation to bring in a RJ45 connection, instead of Coax cable, which made it much easier for me to change my router. Just a suggestion, stay clear of Netgear routers with Verizon because they tend to cause issues sometimes.
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