Originally Posted by b0redom
Or at least 100Mbit rather than Gigabit - the 200Mbps even if it is achievable over a power line (which it almost certainly isn't) is going to be throttled back to 100Mbps as that's what the RJ45 port allows for.
Given that cat5E and cat6 both use RJ45 connections, and are designed to run faster, it is possible to run faster speeds over such a physical port. After accounting for the cable grading in use, the controller hardware is typically why such low (by modern standards) maximum speeds are quoted. Delightfully, this is actually mentioned for the Corinex powerline units
