set top boxes and other lab test equipment

We have a client who runs tests on Set Top Boxes in a test lab for their customers to determine problems and fix them. They have literally a hundred thousand STBs - they have to have at least one of each type any of their clients own and use. Many of these are older models so not available in Energy Star. Many of them will be kept for a few months until their customers replace with a newer model, so the specs are constantly changing. How do we account for the constantly changing nature of the STBs? do we just capture the ones they have at move in, in the Energy Star tracker? Should we file an interpretation request? any and all advice appreciated -