The HP Z420 is a powerful workstation built for Business.  It combines Xeon  Hexa-Core performance with unrivalled reliability. HP Z series are a powerful and expandable workstation that can grow with your business.  Factory refurbished to the highest standards these used ex-lease units are great value for your home or business.  All our refurbished workstations are ready to go out of the box and include Windows OS, Open Office, Microsoft security essentials VLC player and more!  1 Year Warranty. Great support and service.