Setup: Spectrum internet modem>TP-Link TL-SG105 ethernet switch>Deco M4.  Off of the switch I am wired to a Windows 10 pc.  Off of the Deco I am wired to a second Deco.  Everything works EXCEPT no internet connection on my pc.  It says unidentified network.

Old setup: Spectrum modem>Spectrum router>Deco.  Four ethernet ports on the Spectrum router, one wired to my pc.  That connection worked.

I have tried multiple times power cycling all devices in various orders.  It is not the physical connection on my pc, it works when wired into the Spectrum router.  I want to replace the Spectrum router for two reasons.  It will knock some $ off of my monthly bill since I am using the Deco for wifi, and I noticed that when I replaced the Spectrum router with the switch, the internet (Deco wifi) was much faster.  There are no available ethernet ports on the Spectrum modem to use.  I need the wired connection on my pc for stability.

Any feedback/suggestions are most welcome.