1) I kindly ask you to refer to the User Manual for Serial Port ActiveX Control to know more about Quiet registration:
Serial Port ActiveX Control Manual ->General -> Redistribution -> Quiet Registration Ror OEM License Users
2) Please, be informed that we released Serial Port ActiveX Control 2.x about 2 years ago. Since then there was new major version released. And naturally there are many new features added and many fixes made.
Please, read Changelog at the product page to know more about recent changes: http://www.eltima.com/products/changelog/serial-activex/
To know more about this product features, please visit the page:
Please, download free trial version of the product and test its functionality yourself: http://www.eltima.com/download/serial-activex/