Wireless. The room where I inserted it is not anywhere close to where my router is so I cannot use an ethernet cable.
@dz13 You can if you run a Mesh system or Wi-Fi extender, then you can run an Ethernet or CAT7 or 8 cable from that to your Node. Many here do this if they can’t run a cable from their router and frequently report significant improvements in fewer dropouts and/or sound quality. Also, I’d recommend doing a free trial of Qobuz over Tidal once your Node is more broken in (at least 100 hours) as most here prefer it. I switched to Qobuz from Tidal and will never go back or deal with MQA intrusive black box algorithms and unfolding silliness ever again. Just my $0.02 FWIW.