A kindly donor sent me an external numeric keypad from Data General. It has the right keycaps and color for a DG One laptop. Model number 2568. Connection is via a 3-terminal plug; basically a miniature stereo headphone plug.
I'll give this up to a One collector who can identify this for certain. Otherwise, I'll probably repurpose it. FWIW, it appears to be unsued--not even the rubber feet have dirt or wear. --Chuck
