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Hardware Description 45
The Stacking LEDs indicate the unit position in the stack. The following figure illustrates the
LEDs on the front panel.
Figure 2-10. Stacking LEDs
The Stacking LEDs are numbered 1- 6. Each stacking unit has one stacking LED lit, indicating its
Unit ID number. If either Stacking LED 1 or 2 is lit, it indicates that the device is either the Stack
Master or Backup Master.
Table 2-6. Stacking LED Indications
Power Supplies
The device has an internal power supply unit (AC unit) and a connector to connect PowerConnect
3424/P and PowerConnect 3448/P devices to a PowerConnect EPS-470 unit, or to connect
PowerConnect 3424 and PowerConnect 3448 devices to a PowerConnect RPS-600 unit. The
PowerConnect 3424/P and PowerConnect 3448/P devices have an internal power supply (12 Volt).
Operation with both power supply units is regulated through load sharing. Power supply LEDs
indicate the status of the power supply.
The PowerConnect 3424/P and PowerConnect 3448/P devices have an internal power supply of
470W (12V/-48V), with a total of 370W for 24 ports PoE device.
AC Power Supply Unit
The AC power supply unit operates from 90 to 264 VAC, 47 to 63 Hz. The AC power supply unit
uses a standard connector. LED indicator is on the front panel and indicates whether the AC unit
is connected.
LED Color Description
All Stacking LEDs OFF The switch is currently a stand-alone device.
Stacking LED 1-6 (S1-S6) Green Static The device is designated as Stacking Unit N.
OFF The device is not designated as Stacking Unit N.
Stacking Master LED Green Static The device is the Stack Master
OFF The device is not the Stack Master.