The APC Back-UPS ES 750's revolutionary Master/Controlled Outlets conserve power and lower your electricity bill by automatically shutting off power to three of your peripherals any time your computer goes into hibernation. Without this feature, your peripherals may continue to consume electricity even when they are not in use. It also utilizes an ultra-efficient design that consumes less power during normal operation than any other battery backup. The ES 750 is also RoHS compliant and coupled with all the standard features of the Back-UPS ES series.