Sun Microsystems SG-XPCIE20FC-NEM-Z manual 2summarizes port LED indicator combinations

FIGURE 2-4Port Level LEDs

TABLE 2-2summarizes port LED indicator combinations.

TABLE 2-2Port LED Indicator Status Definitions

Green LED	Yellow LED	State
On	1 Fast blink	1-Gb Link Rate - Normal operating state, link up
On	2 Fast blinks	2-Gb Link Rate - Normal operating state, link up
On	3 Fast blinks	4-Gb Link Rate - Normal operating state, link up
Off	Off	Wake-up failure (board failed)
Off	On	POST failure (board failed)
Off	Slow blink	Wake-up failure monitor
Off	Fast blink	Failure in POST
Off	Flashing	POST processing in progress
On	Off	Failure while functioning
On	On	Failure while functioning
Slow blink	Off	Normal, link down
Slow blink	On	Not defined
Slow blink	Slow blink	Off-line for download
Slow blink	Fast blink	Restricted off-line mode (waiting for restart)
Slow blink	Flashing	Restricted off-line mode, test active

14 Sun StorageTek 4 Gb FC NEM 20-Port Host Bus Adapter User’s Guide • February 2008