This 40 MB Vulcan hard drive from Applied Engineering is loaded with System 6.0.1 and a bunch of other apps including the Utilities the Vulcan came with.
The Vulcan consists of a heavy duty power supply with fan (replacing the stock GS power supply) and an internal hard drive with an interface cable leading to a controller card - usually installed in slot 7.
Comes with an original Manual and Disk.
It passes verification and validation and seems to be working just fine. Warranty on this is limited to working when you receive it only.