The operator-information panel contains buttons and indicators such as the release latch for the light path diagnostics panel, the power-control button, and LEDs that indicate information such as system-board errors, hard-drive activity, and power status.
Figure 1 shows the operator-information panel that is used by the SAN Volume Controller 2145-8F4 and the SAN Volume Controller 2145-8F2 models.

Release latch for light
path diagnostics panel
System-error LED (amber)
Information LED (amber)
Locator LED (blue)
Hard disk drive activity
LED (green)
Power control button
Power LED (green)
USB connector