Intel 80286 "DCU" Multibus system

Anyone know anything about these? It's a Multibus system, with an 80286 CPU board inside, Ethernet board, ST506/412 disk controller, floppy, and 40MB hard disk. Date seems to be 1990, which seems a little late for a '286 system. Two serial ports on the back, Ethernet, Centronics, and another DB25 (serial console?). Options on the back for another 19 DB25 ports, 3 larger ports (poss. external disks?), and a DA15 (another Ethernet card I assume) No apparent model number for the whole box, but a label on the front just says: Node name: DCU-NODE ... and a network address. On the underside there's what seems to be a board/part listing: PSYP310-90C iSBC286/12 SCX110 SBX344A SBC552A SBC214 40Mb HH Winchester 360Kb HH floppy ****ESYP310BYATLP**** The CPU board has an extra 1MB memory board fitted, a daughterboard which goes to the possible-console connector, and a battery-backed clock card (luckily there's minimum damage from battery corrosion) Google seems spectacularly unhelpful. Anyone know if "DCU" is meaningful, or if there was any particular target market for these systems? (we need to do PSU checks etc. and find out if that is a serial console before seeing if it'll fire up) Given the port options on the back it was obviously designed to cater for several users - but if it was just an off the shelf UNIX/other server it seems strange that the case wasn't given any badge, overall model label etc. cheers Jules