I've got an ODS 836 DB-9 to fiber token ring transciever. I don't know if it works since I've only got one, no power supply for it, and no fiber. It takes a 12V DC power supply, 2 female pin sockets side by side in an ~5mm round male insulator all inside a ~8mm round recess, apparently held in by friction alone (I have never seen this kind of connector elsewhere). It's in a 5" x 2" x .75" possibly watertight machined steel housing (there's a rubber gasket between the 2 halves). If anyone wants it, it's free to a good home. I'm in College Park, MD 20740. Alexey