I've been using the Keyspan USA-19HS for more than 10 years and while it still works perfectly, there are no drivers for recent versions of macOS so I don't have a usable adapter. . Not to mention it's been held together with tape over the last 5+ years due to heavy use and a few falls onto tile floors in data centers. I was looking for a new cable that would be compatible with the devices I need. Access and availability of current macOS drivers. I found it and couldn't be happier.