D-Link 16-Port 10/100/1000 Rackmountable Switch Unmanaged

The first of the Green Ethernet products the DGS-1016D provides 3 key benefits to end users through its cutting edge innovative eco-friendly technology 

Reduces power consumption & creates less heat 
Extended product life 
Reduces Operating Costs

Power Savings by Number of Connected Ports and Link Status
Computers do not require Internet access all the time; neither do switches utilize all ports at all times. When a computer or network equipment is shutdown, switches often remain on and continue to consume considerable amount of power. With Green Ethernet technology, D-Link switches can automatically detect link status and reduce power usage of ports that are idle. Computers or any connecting parties set to standby mode (not power off), however, will not provide significant power savings.