Lexmark CS331DW A4 Colour Laser PrinterEnhance small workgroup productivity with colour output up to 24 pages per minute, high yield replacement toner cartridges and connectivity via Wi Fi, USB and gigabit ethernetall in the Lexmark CS331dw. Its 1 GHz multi core processor lets you tackle big jobs, while Lexmark full spectrum security helps protect your data. Automatic two sided printing is standard, along with a built in energy saving mode that goes from sleep to print to sleep with