Certified models meet all ENERGY STAR requirements as listed in the Version 2.0 ENERGY STAR Program Requirements for Data Center Storage that are effective as of March 15, 2021 or Version 2.1 requirements that are effective as of January 19, 2022. A detailed listing of key efficiency criteria are available at https://www.energystar.gov/products/office_equipment/data_center_storage/key_product_criteria