http://www.ebay.co.uk/itm/RG0-1117-040CN-HP-3300-3330-3380-RANGE-PC-ENGINE-BOARD-/250989744736?pt=UK_Computing_Printer_Paper_Accessories_ET&hash=item3a70279260
I suspect "PC Engine" might just be a coincidence, but I can't tell. That's not a PC Engine, but I don't even know if it's related.
HP 3300? A bit of a printer perhaps?
It looks like the power supply board for a printer, nothing special.
Rolf
I know I run into these all the time. I think some of these are developmental boards for game kits, while others like people mentioned a specific computer part. Their is a gamedev system I keep seeing for sale, but it is for NES/MSX type games but is not of those types.
I keep asking myself that question as well. What are those things. If you was a programmer, who would play with dev kits ( to aid programmers, and fun projects for them ) then you would know more.
its the power board for a printer