D-Link xStack DGS-3420 Series Reference Manual page 72

xStack® DGS-3420 Series Layer 2 Managed Stackable Gigabit Switch Web UI Reference Guide
To view the following window, click Management > Power Saving Settings, as show below:
The fields that can be configured are described below:
Parameter
Power Saving State
Length Detection
State
Click the Apply button to accept the changes made.
To learn more about the D-Link Green Technologies, go to
Figure 3-51 Management Settings window
Description
Enable or disable the link down power saving mode of each physical port. The switch
port will go into sleep mode when a port is not connected.
Enable or disable the length detection power saving mode on the physical ports. The
switch port will reduce the power feed for shorter cables.
http://green.dlink.com/
62
for more details.