The running costs of the Ricoh SP 4310N mono laser printer is kept to a minimum thanks to it’s long life toner cartridges & low energy consumption. The Ricoh SP 4310N has an innovative night sensor which automatically turns the printer off when the light levels in the room drop below a certain level. It's possible to set the sensor to trigger between 5 & 120 minutes. A4 Mono Laser Printer 36ppm Print Speed 1200x 600 dpi Optimised Resolution 256MB Memory 100 Sheet Bypass Tray 500 Sheet Input Tray Post Script 3 Emulation USB (Universal Serial Bus) Port for Direct Printing Networked, USB