Smart Fans - D-Link DGS-3000 series Hardware Installation Manual

Smart Fans

Switches in this series include smart fans that will automatically change their speed depending on the internal
temperature detected by the sensors built-in the Switch's hardware. These smart fans support three states. They can
either be off, 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:
Switch
DGS-3000-28LP
DGS-3000-28X
DGS-3000-28XMP
DGS-3000-28XS
DGS-3000-52L
DGS-3000-52X
DGS-3000 Series Gigabit Ethernet Switch Hardware Installation Guide
Default On/Off Speed
4500 RPM
5400 RPM
6800 RPM
5400 RPM
5400 RPM
5400 RPM
High Speed
7000 RPM @ above 42°C
7800 RPM @ above 48°C
9500 RPM @ above 43°C
7800 RPM @ above 48°C
7800 RPM @ above 44°C
7800 RPM @ above 46°C
16
Low Speed
4500 RPM @ below 35°C
5400 RPM @ below 43°C
6800 RPM @ below 38°C
5400 RPM @ below 43°C
5400 RPM @ below 38°C
5400 RPM @ below 41°C