I know nothing about this other than it’s model number and that it’s a motherboard with a built in power supply. 🙂 Sold as GM810K kit later. I think the power supply was rated at 5A.
As it stands it wouldn’t be directly suitable for a Nascom-1 (that would have to be mounted off-board and a buffer board used with it), but it would almost certainly be right for a Nascom-2 or Gemini system.
nascom.info 