SYS:MGMT (0:0) is the only port that shows link and activity LEDs:
Issuing the verify-hardware CLI command displays the presence of all onboard NIC ports, but only the SYS:MGMT establishes a connection:
On MC-S400 appliances, SYS:MGMT is the ONLY port that is currently enabled.
NOTE: Ports 1:0, 2:0 and 2:1 are not enabled at this time.
Please use the SYS:MGMT port to configure and access the MC-S400 appliance.