The ProxySG will not boot.
No disk drives appear to be at fault.
The ProxySG will not accept keyboard input.
While attached via serial console, the error message that keeps repeating on the screen is:
VIA_VT8251_smb_driver:write_byte Bus is not idle for device 0:EE, status=3
The most important part of this message is "Bus is not idle for device".
The ProxySG is encountering a hardware issue.
Please work with support to verify the hardware issue then to issue an RMA for the unit.