4x4 Desktop
From Packard Bell Planet Wiki
This is a 4x4 Machine. It uses the well-recognized "Frog Design" design.
It includes a single 3.5" floppy, and a single CD-ROM as well as an empty 5.25" Drive Bay.
Rarely these machines were seen with dual CD-ROM Drives.
The 3x3 removes the second 5.25" drive bay.
This case design was also used by Zenith Data Systems for their desktop computers. Little is known about the Zenith models.