Using just 1.1W in sleep mode and 27W when powered on, the LX-350 is qualified by ENERGY STAR for its excellent energy efficiency. Printer Type Personal printer - dot-matrix - 9 pin - B/W. Print Speed Up to 347 char/sec - high speed draft ¦ Up to 357 char/sec - high speed draft ¦ Up to 260 char/sec - draft ¦ Up to 312 char/sec - draft ¦ Up to 65 char/sec - near letter ¦ Up to 78 char/sec - near letter.