I did the installer in windows with the Opencore guide.if you have wlan then you can do the Ethernet port afterwards otherwise it would need to be sorted out.
how did you create your installer?
via windows or in MacOS?
if windows then you can only do it the way it’s laid out in the OpenCore guide but if you are doing it via MacOS then you can do it via a DMG.
I will try the installation again, this time with different USB ports. And I hope that it will work with one of them.