A4 Black and White Laser Printer, Perfect for Business, Print only, Print speed up to 30 ppm (black), 1 Hi-Speed USB 2.0, Up to 20,000, Up to 600 x 600 dpi, Letter, legal, executive, envelopes, 110-volt input voltage: 110 to 127 VAC (+/- 10%), 60 Hz/50 Hz, 4.6 A; 220-volt input voltage: 220 to 240 VAC (+/- 10%), 60 Hz/50 Hz, 2.7 A. Not dual voltage, 420 watts (active printing), 2.0 watts (ready), 0.5 watts (sleep), 0.5 watts (Auto Off/Wake on USB, enabled at shipment), 0.04 watts (Auto-off/Manual-on), 0.04 (Manual Off)