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 Epson LQ-2090IIN, 550 cps, 121 cps, 10 cpi, Code 128 (A/B/C), Code 39, EAN13, EAN8, Interleaved 2/5, POSTNET, UPC-A, UPC-E, 0.00472 - 0.0181" (0.12 - 0.46 mm), 0.00630 - 0.00748" (0.16 - 0.19 mm) Epson LQ-2090IIN. Maximum print speed: 550 cps, Maximum print speed (LQ): 121 cps, Character pitch: 10 cpi. Continuous paper thickness range: 0.00472 - 0.0181" (0.12 - 0.46 mm), Label thickness range: 0.00630 - 0.00748" (0.16 - 0.19 mm), Multi-part paper thickness range: 0.00472 - 0.0181" (0.12 - 0.46 mm). Product color: Black, White, Buffer size: 128 KB, Sound pressure level (printing): 55 dB. Standard interfaces: Ethernet, Serial, USB 2.0. Print head: 24-pin, Print direction: Bidirectional, Print head life: 400 million characters