Is AGX Orin 32GB and 64GB version support 1Gps Ethernet speed on MGBE?

I have a question for the Jetson AGX Orin 32GB and 64GB that it’s MGBE interface support 1Gbps? Based on the Orin datasheet v1.1 it listed the MGBE support 2.5Gbps, 5Gbps, or 10Gbps throughput mode but does not listed 1Gbps.

Yes, it should be covered. Please refer to this topic: Jetson Orin: MGBE 2.5G mode