Can anyone get any information of Nokia Data KS-21 cash register laptop which had a narrow green screen, paperroll, magnetic card reader and a dock with a disket drive? It had 160mb closed rom with ms dos 3.1 on it. Before It was broken. Connected a hard drive to the diskdrive cables (which had worked with other old computers) and it gave one loud beep and was gone. I have tried to find information of it that how rare and expensive it would have been but have found really nothing. Took it apart and build a new computer of it with 7 inch colour screen, dvd player, touchpad, 8Gb ram, a fast ssd and JBL Cube inside as a speaker. All fitted to the old case. Still there comes days when I regret connecting that harddrive.