The Kaypro Robie, released in January of 1984, was Kaypro’s only CP/M-based desktop computer. It is a non-portable rendition of the Kaypro 4, which is an upgraded version of the Kaypro II line, which used a 4MHz Z80 CPU and featured a built-in 300 baud modem. The floppy drives are on top of the monitor, which is an unusual and somewhat fugly configuration. It was nicknamed “Darth Vader’s Lunchbox”, because it kind of looks like a helmet with the positioning of the floppy drives.
But what made the Robie special was the floppy drives. And not in a good way. The high density (2.6MB!) drives have a habit of eating floppy disks, literally. The drive heads would scrape the media off the disk substrate, leaving you with a worthless plastic circle. The reason for this, according to someone that worked at Kaypro at the time, was that diamond dust was contaminating the drive heads during the polishing step of manufacturing. This gave the drive heads diamond teeth to chew up disks.
Combine this with the fact that people weren’t interested in CP/M machines anymore, and it was no wonder the Robie didn’t perform very well. Though, it did get some exposure in the media; Bruce Willis used one as a desktop computer in the ABC show Moonlighting.