Written in indelible ink on top of object is "89146/3". Written on bottom of object is "NIESEN". The power cord is still attached but is missing the power plug.
Rome-based Insel designed small business computers for first-time computer users. The MAEL 4000 series was used for both accounting in business and as a programmable desk calculator for engineering applications. This keyboard unit operated at the system's console. The company was renamed Mael Computers and acquired by Olivetti in 1982.