Low total cost of ownership: This printer represents excellent value for your money & your business can optimise its running costs with high yield toners & double-pack black toner cartridges. The AL-C3900DN ENERGY STAR qualified power efficiency further reduce your bills & minimise environmental impact. Efficient printing: Big jobs are no problem for this high-performance laser, which has duplex & two paper trays as standard & one additional paper cassette as an option. Flexible capacity: As your business grows, the Acu Laser C3900DN keeps pace with its expandable RAM & HDD. User-friendly: Compact & easy to use, with a large LCD screen, the Acu Laser C3900DN fits effortlessly into your office. Easy integration: The printer is compatible with most IT environments & features PCL6, Postscript 3 Emulation, PDF1.7 emulation, advanced IPv 6 protocols & Gigabit Ethernet support. Advanced IPSec/SSL support improves the security of sensitive materials.