My computer does not have a standard 9-pin Serial port. What are the alternatives?
If you have a USB port on your computer, you can use a USB-to-serial converter to create a serial port. However, it is ESSENTIAL that the USB-to-serial converter provide a fully standard serial port. The most common cause of failure on USB converter units is that some of them do not provide hardware handshaking, even though their documentation claims that they do. We have found that Keyspan brand adapters work well. Belkin F5U109 adapters also work. We have found that Belkin F5U103 adapters do NOT work, regardless of when they were manufactured. If model is unknown, then this is a potential source of failure.
