I don't mind calling the connector an RJ45, but calling this thing an "RJ45 dongle" makes my eye twitch. It's an Ethernet dongle - RJ45 can be used for a lot of other things. For example I've seen "RJ45 dongles" that convert USB to RS232 serial for the console ports on a lot of networking equipment.

TIL. After maybe 25 years of using this connector, I've never heard it called 8P8C. I knew Ethernet has used other physical layers including coax, which I used to run between Amigas way back in the day. But, today I finally learned about 8P8C.

Heh I think anyone who studies for the Network+ ends up debating every time RJ45 is mentioned whether to make this comment or not haha

Don't show yourself out. Stay and remind people. It's important, since these two aren't interchangeable in both directions.

Or RJ31X or RJ38X, both of which did use the 8P8C modular connector in its unkeyed configuration.

Please don't call yourself an "RJ45 nazi" as it devalues the problem of actual nazis