Yes. External solid state drives (SSDs) work with the Thunderbolt 4 Dock. The Samsung T7 portable SSD has been confirmed to work correctly through Satechi internal testing.

Connect the drive based on its cable:

• A USB-C drive connects to one of the three Thunderbolt 4 downstream ports (up to 40 Gbps).
• A USB-A drive connects to one of the three USB-A 3.2 data ports (up to 10 Gbps).

Actual transfer speed depends on the drive itself and on your host computer.