What does the Ethernet LED behavior indicate about my connection speed?
The left Ethernet status light glows green when a device is connected at 1000Mbps (1G) and amber when connected at 2500Mbps (2.5G); it is off when connected at 100Mbps. The right Ethernet status light glows amber when data is actively being passed between the modem and the connected device, and is off when no link is established. (Page 6)
From the official Spectrum Business D3 1 Advanced Voice Modem manual, page 6
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