HP Officejet Pro X551 Printer series - Manual (Page 212)

Power consumption
Power usage drops significantly while in Ready or Sleep mode, which saves natural resources and
saves money without affecting the high performance of this product. Hewlett-Packard printing and
imaging equipment marked with the ENERGY STAR
® logo is qualified to the U.S. Environmental
Protection Agency's ENERGY STAR specifications for imaging equipment. The following mark will
appear on ENERGY STAR qualified imaging products:
Additional ENERGY STAR qualified imaging product model information is listed at:
www.hp.com/go/energystar
NOTE: Additional energy savings may be realized by turning off the printer if it will not be used for a
longer time.
198 Appendix D Environmental product stewardship program ENWW