 Internally the Utility Server was a single-board Z80 computer with 64 kB of RAM, and on startup the internal boot ROM retrieved its operating program from the File Server.The literature/documentation and software that shipped with the Utility Server included a memory map and I/O ports writeup.It was possible to replace the Utility Server's operating code file with a stand-alone copy of Wordstar configured for the serial port, and to fetch and save its files on the file server.