From the manual:
External-Alarm Connections
Alarm relay dry-contact closures for out-of-service (OOS), service-affecting (SA), and
non-service-affecting (NSA) alarms are located at the alarm connector on the upper part of the
back of the server. These relay closures can be used to activate audible or visual alarm indicators.
Use the external-alarm cable, P/N 057–1337–000, for connection to alarm outputs. Table 3-9 lists
the pin assignments for the connector.
Table 3-9. External-Alarm-Connector Pin Assignments.
Pin Number Abbreviation Name
1 OOS–COM Out-of-service, common
2 OOS–NC Out-of-service, normally closed
3 OOS–NO Out-of-service, normally open
4 SA–COM Service-affecting, common
5 SA–NC Service-affecting, normally closed
6 SA–NO Service-affecting, normally open
7 NSA–COM Non-service-affecting, common
8 NSA–NC Non-service-affecting, normally closed
9 NSA–NO Non-service-affecting, normally open