There were several variants, including the Superbrain II, Superbrain II Jr., "QD" (quad density disk drives) and "SD" (super density) models.
The Superbrain is notable for being at the user end of the first Kermit connection in 1981.
The machine was practical and useful in the office environment, but somewhat limiting until the arrival of the first 5MB hard disks in one of the floppy drive bays. This was soon replaced by the 10MB Winchester thus effectively removing all limitations on what could be programmed and stored.