Stuck in this step. How could I solve this problem，thanks.
Not enough info about the hardware… But seems a hardware issue.
It a Raspberry Pi 4 8G Version.
Not many info. Are you using recommended hardware?
If so, try changing the USB3 to Sata adapter.
Yes,I’m using the ecommended hardware.
I test the SSD with the same adapter and it work well.
Confusing…
Assuming the SSD system is ok, the next to verify is the lan cable and also check if your modem or switch is working. Try change lan cables.