In Focus Systems Macintosh II LCD panel box

Hi, Just came across a little 5x5x1" high metal box with the following connectors on it: 15-pin connector labelled "to computer" 15-pin connector labelled "to monitor" 15-pin high-density connector labelled "to LCD panel" connectors for "power in" and "power out" It's badged as being made by In Focus Systems, "For Macintosh II" and model "A-35C". Before I just trace it inside to see what it does I thought I'd ask here about it - maybe someone knows exactly what it is. Presumably some sort of frequency convertor unit; any ideas what LCD panel connected to it and the specs of it? I was hoping it would actually contain some sort of buffer memory inside (and might come in handy for something else with a bit of hacking), but it seems not. Chips inside are standard logic / timers, a couple of 8-pin "7660CPA" chips (whatever those do), and analogue sections for R, G and B. Chip dates are all within 1990. May still prove useful for something one day anyway! cheers Jules