Black Box serial adapter

The RS-422/485 Serial Interface Plus is Windows-compatible without the need for special software or drivers. Today's mainstream operating systems, such as Windows, do not give applications direct control over hardware devices. Applications must make calls to a driver substructure. Therefore, features not supported by existing drivers, such as RS-485, are very difficult to implement because lower-level I/O handling is required. In operating systems that don't have a standard driver to support RS-485 communications, you need to provide the driver development. What's worse, once a driver is developed, it must be maintained to support subsequent releases of the operating system. However, the RS-422/485 Serial Interface Plus automatically handles low-level RS-485 driver maintenance via hardware. Therefore, initial development can be targeted for RS-232, debugged, tested, and then implemented as RS-485. The RS-422/485 Serial Interface Plus was designed for simple integration of RS-485 networks - with little or no programming changes - within Windows and other protected-mode operating systems. This card has 16850 UART communication chip.