This is what it’s top of the interface board looked like.
The leftmost part is the massive power supply unit.
Actual comparison of a 3.5” HDD we see today and the great 55 MB HDD of 1985.
This is the cover of this 1985 HDD that gives detailed information about handling and installation of it.
All of these images given below look more of an artistic marvel than a hard drive. Look and enjoy. They showcase the inner modeling and design of this beautiful HDD.
Source ( :Via )