Rear Panel Description; Side Panel Description; Gigabit Combo Ports - D-Link DES-3550 User Manual

DES-3550 Layer 2 Fast Ethernet Switch User's Guide

Rear Panel Description

The rear panel of the Switch contains an AC power connector.
Figure 1- 3. Rear panel view of the Switch
The AC power connector 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 its power setting to any supply
voltage in the range from 100 ~ 240 VAC at 50 ~ 60 Hz.
The rear panel also includes an outlet for an optional external power supply. When power
fails, the optional external RPS will take over all the power immediately and automatically.
The rear panel contains two system fans. The system fans are used to dissipate heat. Do not
block these openings, and leave at least 6 inches of space at the rear and sides of the Switch
for proper ventilation. Be reminded that without proper heat dissipation and air circulation,
system components might overheat, which could lead to system failure.

Side Panel Description

The right-hand side panel of the Switch contains heat vents to dissipate heat. Keep these
openings clear of obstructions of up to six inches of space. Failure to comply with this may
result in the system overheating and eventually to a system failure.
Figure 1-4. Side Panels

Gigabit Combo Ports

In addition to the 48 10/100 Mbps ports, the Switch features two Gigabit Ethernet Combo
ports. These two ports are 1000BASE-T copper ports (provided) and Mini-GBIC ports
(optional). See the diagram below to view the two Mini-GBIC port modules being plugged
into the Switch. Please note that although these two front panel modules can be used
simultaneously, the ports must be different. The GBIC port will always have the highest
priority.
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