On Win 10 64bit, after I install both Setup Manager 1.28 and allow virtual COM ports installation, I can only see 4 instances of generic USB Serial Device (COM3-6). In the driver details, the provider is Microsoft, so I guess the driver installation does not make the USB COM ports the RRC 1258 COM0-2,and Ext.
and btw, the version number is still 1.27 (when uninstalling programs)