D-Link DXS-3400 SERIES, Руководство по установке оборудования

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DXS-3400 Series Lite Layer 3 Stackable 10GbE Managed Switch Hardware Installation Guide
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Figure 1-8 Rear Panel view of the DXS-3400-24SC with a DC Power Supply
Components that can be found on the rear panel of this switch are listed in the table below.
Component Description
Security Lock Provide a Kensington-compatible security lock to be able to connect to a secure
immovable device. Insert the lock into the notch and turn the key to secure the
lock. The lock-and-cable apparatus should be purchased separately.
Switch GND
Use an electrical grounding wire and connect one end of the wire to the Switch
GND and the other end of the wire to an electrical grounding point most
commonly found on the Switch mounting rack itself.
Three Fan Module Slots These slots can be equipped with the following fan module.

DXS-FAN100 (Normal fan tray with front-to-back airflow)
Two Power Supply Module
Slots
These slots can be equipped with the following additional power modules. Only
one power supply module is included. Any additional modules should be bought
separately.

DXS-PWR300AC (300 Watt AC power supply tray with front-to-back
airflow)

DXS-PWR300DC (300 Watt DC power supply tray with front-to-back
airflow)
Power Supply Module
Connect the one end of the AC power cord supplied to the AC power connector and the other end into a properly
grounded electrical outlet. The Switch will automatically adjust the power setting to adapt to any voltage supply in the
range from 100~240 VAC at 50~60 Hz. In addition, an optional second power supply module can be plugged into the
second power supply connector slot. The primary and secondary power supply can be either AC supplied or DC
supplied, depending on the power supply module inserted. This makes it dual redundant.
Fan Module
The fan modules on the Switch provide front-to-back airflow and are hot-swappable. The Switch also includes smart
fans that will automatically change their speed depending on the internal temperature detected by the sensors built-in
the hardware. These smart fans support two states. They can either running at a low speed , or running at a high
speed .
The following will explain when these fans will toggle between low and high speeds:

DXS-3400-24TC: When the internal temperature, detected by the sensor, rises above 37 °C, the fan will
automatically change to the high speed. When the internal temperature, detected by the sensor, falls below 33
°C, the fan will automatically change to the low speed.

DXS-3400-24SC: When the internal temperature, detected by the sensor, rises above 39 °C, the fan will
automatically change to the high speed. When the internal temperature, detected by the sensor, falls below 36
°C, the fan will automatically change to the low speed.