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A serial to usb cable is needed along putty config on your laptop. See Software engineering for cable.
Plug the serial cable into the shuffler and the usb into your laptop
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Determine Shuffler’s IP Address & Establish Connection
After establishing connection, hit enter to bring the login prompt:
Login to connection with username: debian | Password: Boundary (case-sensitive) (password will appear blank while typing, hit enter when finished). List the shuffler’s IP address using the command: ifconfig -a
Once you the IP Address, you could reconnect over network (connecting through Putty with IP address... or you could just continue over serial.
Either way, you take these steps:
When the SSD erase is complete unplug the serial cable from the shuffler and reboot.