The primary computer normally gets assigned the typical 192.168.1.10 IP address, although I can set it to anything from 192.168.1.10 - 192.168.1.100. This model of modem/router seems to have the software capability to connect multiple devices, but again it only has the one ethernet cable connection to the primary computer's internal ethernet card.
How to Connect Two Wireless Routers to One Modem - YouTube Aug 29, 2019 Can I connect two routers to one fiber modem? - Quora First connect each router to your computer via the LAN ports or wifi if available and then configure a different base ip for each put in 192.168.2.X for one and 192.168.3.X for the other.If the modem has an internal router as well then give it an ip as 192.168.1.X, if not then let it be.make sure these three don't contradict to each other as they will be sharing the same parent network.
Jan 10, 2018
Can I use multiple routers connected to my cable modem To do this you would need to place a switch between the routers and the modem. Each router would connect to the switch via the WAN port and the switch to the cable modem's Ethernet port. How To Add a Second Router to Your Wireless Network
Connect two Routers to one cable modem | Tom's Hardware Forum
First connect each router to your computer via the LAN ports or wifi if available and then configure a different base ip for each put in 192.168.2.X for one and 192.168.3.X for the other.If the modem has an internal router as well then give it an ip as 192.168.1.X, if not then let it be.make sure these three don't contradict to each other as they will be sharing the same parent network. Will hooking up two or more routers speed up my internet? For a router to work it must connect to a modem, which connects to a cable port on the wall that is activated by your internet service provider. 3. Modems are the source of your internet: Again Two routers on one modem | Tom's Hardware Forum