This is a set of CDs shipped with the Visual Workstation 320. They are as follows:

    CD1 is the NT 4.0 Workstation CD-ROM (English)
    CD2 is the CD to install after NT 4.0, contains additional drivers
    CD3 is addition software (LANDesk Client Manager, McAfee VirusScan 3.2 and Netscape Communicator 4.5)
    CD4 is "Visual Explorations", essentially a CD with documentation and demos for the Visual Workstation
    CD5 is additional trial software

CD1 looks like it has the licensed CPU limit removed, so there's a good chance it will see all 4 CPUs in the Visual Workstation 540, but I have not tested this.

These images were originally posted by someone on Nekochan, can't remember who it was. They look like Nero .nrg files, but most software should use them like .isos.