Item Indicator, Button, or
Connector Icon Description
3 12 Gbps SAS IN port (2) Provides host-to-controller SAS connection.
4 USB port Reserved port.
5 Mini USB port Dell support only.
6 Password reset switch Pressing this switch resets the password.
7 SAS expansion port (2) Provides SAS OUT connection for cabling to a daisy
chained expansion enclosure. Port 0 expansion port is
recommended.
8 16 Gbps FC IN port (4) Provides host-to-controller SAS connection.
9 Seven segment display
sequence
Displays status or error codes for the storage array.
10 System identification
indicator
The system identification indicator blinks blue when
system identification switch push-button on the
enclosure front panel is pressed.
11 Controller fault
indicator
The controller fault indicator lights amber when controller
fault is detected.
12 Controller power
indicator
The controller power indicator lights green when
controller power is on.
13 Cache active or cache
offload indicator
The cache active or cache offload indicator lights green
when on-board controller memory contains data.
If AC power fails, this LED changes to indicate cache
offload status.
If the password reset function has successfully changed
the password, this LED flashes on and off briefly.
14 Battery fault indicator The battery fault indicator lights amber when battery
backup unit or battery has failed.
Host Channel LED Link Rate Indications
Above each FC port is a pair of LED indicators. The status of any FC port can be determined by applying
the condition of each LED pair.
Table 1. LED Status Indicators
LED 0 LED 1 Port Status
Off Off Link down
On Off 4 Gbps link
Off On 8 Gbps link
On On 16 Gbps link
16