FastLynx 3.3 - USB-to-Serial Adapters
FastLynx 3.3 does not work with certain USB-to-serial adapters.
What works for me is my Trendnet TU-S9, of version v2.0R A photo of that is at here. Used in Windows 10.
What does not work for me, is the IOCrest unit that is pictured at here. FastLynx 3.3 errors part way through transferring its DOS slave program to the vintage PC. (BTW. This unit works for me when I use it to access a serial drive.)