NETGEAR Nighthawk CM1100-100NAR DOCSIS 3.1 Cable Modem, Refurbished $90

Note: Comes with 90 day seller warranty

A Google search returned an informative Review comment, snipet here:

".... It does have 2 ports BUT apparently only supports one home network (doesn't act like an internal ethernet switch). I wanted to connect a router to one port and use the other port to hardwire connect to a computer. I am an electrical engineer and after trying to get both to work for over a day (note: getting one to work would somehow disable the other network) I called customer support thinking the problem was perhaps due to IP addressing and modem configuration. The router I was connecting to was a Netgear WiFi6 mesh. My frustration grew when they told me that it had nothing to do with IP addressing, the second LAN port was only for link aggregation and there was no way to connect two home networks directly to the modem...."

Quote from NukinFuts : A Google search REI termed this infotech informative Review comment snipet: ".... It does have 2 ports BUT apparently only supports one home network (doesn't act like an internal ethernet switch). I wanted to connect a router to one port and use the other port to hardwire connect to a computer. I am an electrical engineer and after trying to get both to work for over a day (note: getting one to work would somehow disable the other network) I called customer support thinking the problem was perhaps due to IP addressing and modem configuration. The router I was connecting to was a Netgear WiFi6 mesh. My frustration grew when they told me that it had nothing to do with IP addressing, the second LAN port was only for link aggregation and there was no way to connect two home networks directly to the modem...."

?? Who doesn't have a wifi router for more ports ??

Quote from fgyygtdd4 : ?? Who doesn't have a wifi router for more ports ??

Right!?!

I'm surprised, and grateful that guy wrote about this, preventing me from making a mistake.

Quote from NukinFuts : Right!?! I'm surprised, and grateful that guy wrote about this, preventing me from making a mistake.

Just to be clear, this is item is a modem, and it only needs 1 port, so his complaint is nonsense. You hook it up to a separate item (wifi router) which normally has 4 ports and also gives you wifi.

Quote from fgyygtdd4 : Just to be clear, this is item is a modem, and it only needs 1 port, so his complaint is nonsense. You hook it up to a separate item (wifi router) which normally has 4 ports and also gives you wifi.

Correct.

(I didn't say otherwise/different)

That Comment explains that he/she was unable to use modem port 1 to his computer while ALSO using a router through modem port 2.

If that's true, then perhaps the only work-around would be to put the router on modem port 1, and computer on router port 1(?)