Spectrum currently has Gigabit Ethernet service (940 Mbps) deployed with a margin of up to 1.2 Gbps. This module worked great with no configuration required in my UDM Pro. The Spectrum modem (both EU2251 and ET2251, I just got rid of the latter - hooray!) auto-negotiates 2.5 Gb/s, and UDM displays the channel as 10,000 Mb/s. Overall very happy with it. As other reviewers have said, it gets a little warm but you won't get burned.
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