The D-Link Green series has several ways that it saves power:
- It powers down port where it detects an idle link status.
- The switch can detect the cable length of Gigabit Ethernet run, and will use less power for shorter runs.
Before I replaced the switch, I measured the combined energy usages of the switches and did the same after replacing the old ones with the new switch. By just replacing the two older switches, with the single new switch I saw some power savings. Since I have other switches that are always on, I decided to replace those as well.
Once I replaced these switches, I saw a savings of 8 watts.
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