ENERGY STAR® is the government-backed symbol for energy efficiency, providing simple, credible, and unbiased information that consumers and businesses rely on to make well-informed decisions. ENERGY STAR is the simple choice for energy efficiency, making it easy for consumers and businesses to purchase products that save them money and protect the environment. ENERGY STAR 戴尔 2155cn, 激光, 彩色打印, 1200 x 1200 DPI, 单拷贝, 单页扫描, A4 戴尔 2155cn. 打印技术: 激光, 打印: 彩色打印, 最大分辨率: 1200 x 1200 DPI, 打印速度（彩色，一般品质，A4/US Letter）: 24 ppm. 烤貝/ 影印: 单拷贝. 扫描: 单页扫描, 光学扫描分辨率: 1200 x 1200 DPI. 传真: 单传真. ISO A 系列文件最大尺寸: A4