I could not help but become part of the conversation even if people have already written more 'diligent and competent than me. My site is http://elazzerini.interfree.it Originally my disposal clone a Ferguson Bigboard I that I was able to start charging even CP / M 2.2 to 3.5" diskettes. Obviously I could not help but come into possession of his descendants: the Xerox 820-I and the Kaypro-II whose reviews I entered the site and are still working. The only board xerox 820-I has been assembled by me in a PC case for making all the corrections have composite video, and use PS2 interface-parallel drive with 3.5 ". The Kaypro II was full of his case but with a full size 5.25" drive out of service and when buying a separate drive full size 5.25 " is fully operational. I'm happy to have just these two machines, but fully functional. I could not afford them to buy them with the original prices of the 80's. To assess the selling rate of your Kaypro-II if the goal is to gain much more money I suggest whether it is fully functional and free of scratches, it is best to sell it to pieces, only one drive fullsize 5.25 " fully functional sold separately makes it almost more 'all over the computer alone. Probably be able to sell the first pair of drive 5.25 ", then the mainboard and then the keyboard or the power supply while you remain the case and the monitor. I do not think could you sell it in bulk to achieve a fair return if the product Kaypro-II at that time very popular. At least every three days you find it for sale on epay. I am currently looking for other boards like the Ferguson Bigboard II or the Ampro Little Board based on the Z80 or Z80 based mainboard in general other. Greetings Enrico - Pisa (Italy)