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 DELL 2155cn, La de, In màu, 1200 x 1200 DPI, Photocopy mono, Scan mono, A4 DELL 2155cn. Công nghệ in: La de, In: In màu, Độ phân giải tối đa: 1200 x 1200 DPI, Tốc độ in (màu, chất lượng bình thường, A4/US Letter): 24 ppm. Sao chép: Photocopy mono. Quét (scan): Scan mono, Độ phân giải scan quang học: 1200 x 1200 DPI. Fax: Fax mono. Khổ giấy ISO A-series tối đa: A4