Hi! Here's a message that I received in response to a Braille Lite question that I had asked. I hope this is what you need. Donna about cables. Here's how you have to have your Blazie cables set up to communicate between the Braille Lite and your computer. This is how I have mine set up. At the end of your serial cable (the big end with all the pins), connect a male-to-female gender changer. This is an adapter that has a bunch of holes on both of its ends. Next, you need to connect a NULL modem adapter to the end of your gender changer. This one has holes on one end and pins on another. Be careful though, because there are two adapters that feel like this; one has little lights poking up out of the top though and the other is flat-topped. Use the flat-topped adapter because the other one won't do anything but beep at you if there is some sort of serial activity passing through it. Next, if the serial port on your computer is a nice nine-pinner, you'll need to attach a 25-to-9 pin converter. This one is triangular-shaped with the base having an end with pins in it and the top a smaller square containing holes. Now, all you need to do is connect this huge contraption to your computer and you're set. You don't always need to use the Blazie cables though, and in fact I recommend you go to Radio Shack when you can and get a custom-made cable if possible. The thing with Blazie cables is that some aren't reliable at all, whereas others can always be counted on to work properly. I, for instance, have been using the exact same cable to connect my Braille Lite to my PC for the last four years and it hasn't given me any problems. HTH Steve No, you can purchase these cables at any local computer store. I think.