The adapter supports 10 Gigabit connections via copper cable up to 100 metres and is compatible with SFP+ interfaces. This means that it also works with devices that support a full 10 Gbit/s via SFP+.

Regarding the Dream 7, there are reports that users are using the SFP-to-RJ45 transceiver with a Cat8 cable on their modem, indicating compatibility. However, no official confirmation has been documented specifically for the Dream 7 with full 10 Gbps speed.

To summarise: The adapter is technically designed for 10 Gbps and should work with the Dream 7 if it supports SFP+ at 10 Gbps. However, there is no 100 per cent guarantee for full 10 Gbit/s with the Dream 7, as there is no explicit manufacturer's specification.