Very solid and well made, installs on windows without problems (you don't even have to download the drivers, they are automatically downloaded), however, wasn't able to make my Bixolon SRP-270 to print with it, no errors returned, but the printer just doesn't work, have tried on windows and macOS (both 10 and 11). (To clarify: printer is working, and prints well when connected to standard PC COM port via conventional serial printer cable).
Looks ok, not yet tested