In December 1993 Hitachi announced the elles office server series, which was more than twice as cost effective as previous office processors. The series maintained compatibility with previous office processor resources while supporting open-source systems. The elles series made it possible to construct core operational application systems, developed previously on office processors, in client-server environments using PCs and LANs.
The servers could be operated using the Microsoft Windows 3.1 GUI.
Specialized systems using fax connections or PEN connections could also be constructed.