The connector is called an SDL (shielded data link) connector I believe. You can make your own or buy one. Lots of members like orihalcon's usb converters for this. Alternatively, you can buy an sdl ps/2 cable from ebay or unicomp (pckeyboard.com) and use a PS/2 port. If you don't have a PS/2 port, you can connect it with an adapter. I recommend the ID innovations ones, and use one myself for my model M at work.