Digital made a PDP 11/40 "industrial11" model. The front panel coloring is different but otherwise operates the same as the standard unit.

Pictured here is a view of the bottom card cage with the main CPU and memory module. Click image for larger view.

The top expansion chassis of the industrial 11 is also chock full of cards including more memory. Click image for larger view.

Pictured is the front panel with the cover removed. I spent a few hours cleaning before I got to this point, the entire system is pretty rough. Click image for larger view.

This photo shows the 4 lights that do not function. Technically this is a camera trick, but for illustrative purposes, work with me. Click image for larger view.

I removed the dead bulbs and replaced them with bulbs from a donor front panel, that was used in a DEC system but not branded "Digital". Pictured are a few LED cathode/anode pins, poking through the back of the front panel board. Click image for larger view.

The lights from the donor panel have a slightly different resistance and they shine less than the originals. The panel traces are kind of brittle and I decided to leave them as is rather than remove and put in something else. The picture exaggerates the difference, live it's not so bad in normal light, one would not notice during use. Click image for larger view.

Here is a picture of the front panel plates from the regular 11/40 and the industrial 11. The Rear Click image for larger view.