Expansion I/O module SAS Activity LED location and conditions

This section discusses the location of the SAS Activity LEDs on the Expansion I/O modules and the SAS Activity LED conditions.

Figure: Expansion I/O module SAS Activity LED location

Table: Expansion I/O module SAS Activity LED conditions

Condition	Activity LED (green)	Fault LED (amber)
No Cable Present	Off	Off
Cable Present All links up, no activity.	On	Off
Cable Present All links up.	Flash with aggregate port activity	Off
Critical Fault Any fault which causes operation of the cable to cease or fail to start For example, an OVERCURRENT trip. No connection detected at the opposite end of the SAS cable	Off	On
Non-Critical Fault Any fault which does not cause the connection to cease operation. For example, not all links established; OVERTEMPERATURE condition detected.	Flash with aggregate port activity	Flashing - One second on; one second off