DGS-3000-28SC Layer 2 Managed Stackable Gigabit Switch Hardware Installation Guide
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Link/Act LEDs
The Switch has LED indicators for Link and Activity.
Stacking ID
For standalone Switches, this will display number “1”. For stacked Switches, this indicates
the position in the stacking box ID. The box ID is assigned either by the user (static mode)
or by the system (automatic mode). When “1” to “6” is displayed, this indicates the stacking
position of the switch. An “H” indicates the device was assigned as the stacking Master. “h“
means the device was selected to be the Backup Master. A “G” is displayed when the
Safeguard Engine feature enters the exhausted mode.
Rear Panel Description
The rear panel contains an AC power socket, an ON/OFF toggle switch, an outlet for an external redundant power
supply, a security lock, a power cord retainer hole, and an earthing connection screw.
Figure 1-3 Rear panel view of the DGS-3000-28SC
The AC power socket is a standard three-pronged connector that supports the power cord. Plug-in the female
connector of the provided power cord into this socket, and the male side of the cord into a power outlet. The Switch
automatically adjusts the power setting to any supply voltage in the range from 100 to 240 VAC at 50 to 60 Hz. An
optional external Redundant Power Supply, such as the DPS-200, DPS-200A, DPS-500A, and DPS-500DC (HW: B1),
can be plugged into the RPS outlet displayed above. When the internal power fails, this optional external RPS will take
over all the power immediately and automatically.
