This is a multiple router Old-Gen Google Wifi System. Over time we tested many Mesh Systems for our old house and this one worked well enough to be a mainstay for years. Now that the technology is better we've upgraded to a Wifi 6E system. I'll leave the link to one of the home router units which are no longer being sold by retail. This was bought in two separate packages. The first was a Main unit + Two extender combo, and then we bought a second main unit for the second floor to reduce bandwidth dropoff on the second floor. Consider the modem free, we don't need it. I can't find on its original spec sheet whether it's wifi 5, 6, etc. but it's capable of up to 6GHz.