Connect your Velop to the router using Wi-Fi, and set up Ethernet on the router to support two devices.
Connect your Velop to the router using Wi-Fi, and set up Ethernet on the router to support two devices.
This doesn't quite follow logic. It seems you're mixing WiFi and Ethernet connections. If a device connects through the main router using WiFi, it isn't a true Ethernet link. Systems like Velops work by linking to a modem or gateway, with additional devices communicating via WiFi. Mesh networks often use separate radios for backhaul. For a stable Ethernet connection, you should run a physical cable from the router to the device. If wiring isn't possible, consider Power Line adapters or MOCA adapters as alternatives.
Checking if adding a new node and linking the main line to the ISP allows Ethernet access with two ports. Or not?
It's not using Ethernet anymore. You're still on WiFi. Ethernet means a physical connection from your device to the main router via a cable.
I understand it isn't really Ethernet, but I just need to connect my non-WiFi PC in the upstairs room.
But yes, the Ethernet ports need to work properly. If I were you, I’d consider switching the ISP box into bridge mode. Go for a mesh network instead. Make one device the central router and the others extend the Wi-Fi. Just place any additional units in areas with strong signal strength. Even then, speeds might differ. My sister uses the Google mesh system, but after setting it up I was disappointed. She charges 600 Mbps, yet the satellite unit only got about 30 Mbps. That’s a bit disappointing.