Ah, OK. That's either an -11/04 or -11/34 in the top left corner, with either an RX01 or RX02 above it. (Not enought detail in the image to say.) The rest of it seems to all be some sort of custom medical or other specialized hardware. (The /04 and /34 are very similar - the only difference is which processor card(s) is/are plugged in - you can convert most -11/04's [it depends on the specific backplane in use] to -11/34's by pulling the M7263 KD11-D -11/04 processor card, and plugging in instead the M8265 & M8266 KD11-EA -11/34A processor cards, which still seem to be relatively prevalent.) Noel