I have managed to get an old OnePlus5T phone up and running with PostmarketOS and have hosted a couple of services there.
If it possible to charge and give Ethernet connection using those multi port extensions on a phone?
Thought I’d ask before investing in one as I am on a super tight budget.
Not really, drivers for ethernet chipsets are OS-dependent. Any x86 laptop is going to implement USB correctly because the controllers are built into the CPU