Ethernet

@hjdca 

Wow ! Thank you for your generosity of sharing this! I was told it was not possible. Eero tech told me it would work for a few hours, perhaps days then an error message would show on the Eero. Maybe its just the Eero 7 Max. Ive been banging my head trying to figure this out. I am so glad there people out there smarter than me. lol/ May I ask what 2.5mm DC audiophile cable you used? I am new to this and as I mentioned thankful. 

@richardnyc2 

I ordered the cable and adapter through Amazon.  It checked my order and I ordered the 2.1mm version.  This cable has options for 1 meter, or 2 meter, or combinations of 2.1mm and 2.5 mm..  So depending on your LPS and adapter, order accordingly.  

Here is the cable I ordered:

DC Cable 4N 99.998% Pure Silver HiFi Audio DC Power Cable DC Extension Cord 5.5mm x 2.1mm 12V 0.5A High Purity OFC Audiophile Power Cord for Audio,Speakers, Subwoofers, Home Theater,Amp（2M/6.6Ft）
Sold by: Monosaudio

Here is the adapter I ordered.

for Starlink Mini Power Cable USB C to DC Adapter, Type-C Male to DC Female Power Cable Adapter, DC Female 5.5x2.1mm, for Starlink Mini, for 20V/65W+ Type-C PD Power Supply (2Pack)
Brand: caojunzhen

@hjdca 

Thanks so much ! Are you in the US ?

@richardnyc2 

Yup, west coast... You’re most welcome.  You can see the detail and various pics of my stereo system, if you click on the picture next to my ID on my post, and then select "hjdca’s system".

Just FYI supporting a lot of the comments here. Per Chat GPT:

Why Cat8 is a bad fit for a Node N130
Cat8 is:
heavily shielded (often multiple layers)
designed for 25–40 Gbps data centers
meant to be properly grounded at both ends
Your Node N130:
is 1 Gbps max
has a floating, audio-centric ground
is sensitive to common-mode noise, not data errors
When you plug in a shielded Cat8 cable:
the shield can act as a noise conduit
ground noise from the router/switch can couple into the Node
the cable can behave like an antenna instead of a barrier
In audio systems, over-shielding often moves noise instead of blocking it.

What you’re really removing by going Ethernet instead of Wi-Fi:
When the Node N130 uses Wi-Fi, it has:
an active RF receiver/transmitter
high-frequency clocks tied to the radio
bursty current draw as packets arrive
All of that lives inside the Node’s chassis, sharing ground and power with:
the USB / S/PDIF output stage
the internal processor
the clock that ultimately feeds the Iris
By switching to Ethernet:
the Wi-Fi radio is disabled
RF activity inside the Node drops
internal EMI and power-rail modulation are reduced
That’s a much more direct and plausible noise reduction than changing the router PSU across the house.

So I’ll return the Cat8. I ordered a Belden Cat6 from BlueJeans.