** The quiet, low-energy eco model** Ideal for Reliability & Extended Use 2TB 5700rpm 64MB Buffer ** Silent Design** Built-in silent operation technology introduces a new dimension of silent design. ** Efficient Power Management** Energy consumption is reduced by 19 to 25% compared to 7, 200-rpm models. Low temperature operation, curbing heat generation, raises reliability throughout the HDD service life. ** Eco-Friendly Performance** Incorporating keen concern for the environment, there is full compliance with the ROHS directive defining Restriction of Hazardous Substances. For chlorine & bromine, monitoring holds concentrations within the voluntary standard values (900 ppm for each substance, combined ceiling of 1, 500 ppm). The demand for alogen free operation is also addressed, yet another measure with ecology foremost in mind.