Unfortunately, the cheaper USB socket doesn't retain the cable connector as well as the older ones did. The only notable difference is a lack of molded numbers (1, 2, 3 and 4) on the end of the plastic tab in the middle of the port. From the outside, it looks almost the same. I keep one in my laptop bag at all times.Ĭons: Tripp-Lite has made a few changes since they took over the Keyspan line. The Keyspan adapter comes with a driver CD and a USB cable and takes just a few minutes to set up. The Keyspan is extremely configurable, fast, reliable, durable and easy to use. Since I first started using the Keyspan adapter, I've bought over a dozen more for service techs, co-workers and even a couple of bosses.
It works with every type of serial cable adapter I've thrown at it. I've used it with laptops and desktops running Windows 98 through Windows 7. Rockwell Automation sells their own version of a USB serial port adapter (PN 9300-USBS), but it's about $130. The first one was purchased after reading recommendations from several control system experts, and I haven't been disappointed. Pros: I've been using the Keyspan USA-19HS for years.
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