Control up to 6 hdd power switches
Power off hdds that are not in use
Reduce energy & extend hdd life
Blue led indicator for hdd working status
Two sets of input power supply cable
I used this to device to boot to two different hard drives, one for work in the mornings, and one for playing games at night, without the need for two seperate computers. Also works great for local backup/data storage that doesnt need to be powered on all the time.