I’ve always thought of it as Ethernet is the protocol, maybe even the cable (but Cat5/6 would be more accurate for this), while RJ45 is the plastic connector at the end of the cable. You could have a telephone use an RJ45 connector, but it wouldn’t be an ethernet port it’s being plugged into. Unless it’s an IP phone and it actually does used ethernet protocols and cables I guess.
But yeah if you’re using different connectors I guess you’d have to specify it’s an RJ45 ethernet port. But I’ve never seen an ethernet port use anything other than RJ45, so if someone is just saying “ethernet port” we can probably assume it’s RJ45.
Ethernet over coaxial cables with BNC connectors were a thing until the late 90s. At least at my place. Nowadays we are transitioning to Ethernet over optical fiber that comes with quite a variety of different connectors.
I’ve always thought of it as Ethernet is the protocol, maybe even the cable (but Cat5/6 would be more accurate for this), while RJ45 is the plastic connector at the end of the cable. You could have a telephone use an RJ45 connector, but it wouldn’t be an ethernet port it’s being plugged into. Unless it’s an IP phone and it actually does used ethernet protocols and cables I guess.
But yeah if you’re using different connectors I guess you’d have to specify it’s an RJ45 ethernet port. But I’ve never seen an ethernet port use anything other than RJ45, so if someone is just saying “ethernet port” we can probably assume it’s RJ45.
Ethernet over coaxial cables with BNC connectors were a thing until the late 90s. At least at my place. Nowadays we are transitioning to Ethernet over optical fiber that comes with quite a variety of different connectors.