IMPORTANT: Notice that the I/O modules are installed differently between the SFF drive enclosure
and the LFF drive enclosure.
• In the SFF drive enclosure, the I/O modules in the enclosure are inverted 180° from each other,
as well as the SAS ports.
• In the LFF drive enclosure, the I/O modules in the enclosure are installed in the same direction,
as well as the SAS ports.
Figure 103: I/O module LEDs, SFF drive enclosure rear view
Table 31: I/O module LEDs, SFF drive enclosure rear view
LED Function Status State
Power Green solid Power
Off No power
UID/Service Blue flashing Locate active
Off Locate not active
Fault Amber solid Fault
Off No fault
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