The AX 2550 cord is not compatible with the port on either of my 2 different name brand laptops. Do you have any other cord that will work as this is useless as is. Any other suggestions?
You need to get a USB-to-RS232 adapter. It is an adapter that will allow you to match the AX2550 cable to the USB port in your laptop. They are widely available and cost 15 to 20 dollars.