Additional Solutions To Add Ports

Good Afternoon All

I have the black gateway not sure of the model but it has 2 Ethernet Ports and 2 Phone Ports.  Is there a way to get a Gateway that has 4 Ethernet Ports?  I have my PC that needs to be hardwired or I prefer it to being hardwired.  I have my FireTV Cube on Ethernet, My Google Home Wifi Extenders plugged into the other Ethernet Port.  Not sure if a splitter would work in the case?

Thank You