LED
PWR
Diag
RPU
Stack
Power Supply Receptacles
There are two power receptacles on the rear panel of the switch. The standard
power receptacle is for the AC power cord. The receptacle labeled "RPU" is for the
optional Redundant Power Unit (RPU).
Table 1-3. System Status LEDs
Condition
Status
On Green
The unit's internal power supply is operating normally.
On Amber
The unit's internal power supply has failed.
Off
The unit has no power connected.
On Green
The system diagnostic test has completed successfully.
Flashing Green
The system diagnostic test is in progress.
On Amber
The system diagnostic test has detected a fault.
Flashing Amber
Packets cannot be transmitted from the stacking port.
Green
Indicates that a redundant power unit is attached and is
in backup or active mode.
Amber
A redundant power unit is attached, but there is a fault.
Off
There is no redundant power unit currently attached.
Flashing Amber
Initial state of stack detection and configuration upon
powering on.
Green
This switch is acting as the master unit in the stack.
Amber
This switch is acting as a slave unit in the stack.
Flashing Green
Indicates that the unit ID of each switch in the stack is
being displayed by port LEDs 1 to 8 (initiated by a CLI
command).
Figure 1-4. Power Supply Receptacles
Description of Hardware
1
1-5