The USA-FTDI4X-NUT 4-Port USB 2.0 to RS-232 Converter is a reliable way to expand your system’s serial connectivity when built-in COM ports are limited. Using a high-performance FTDI chipset, it adds four standard RS-232 ports to your desktop, laptop, or mobile device with full Windows 11 support. Each port is automatically configured as an additional COM port and retains its settings even after reconnection, making it seamless to use across sessions. With baud rates up to 921.6Kbps and built-in 15kV ESD surge protection, it ensures stable, safe data transfers for GPS, printers, modems, CNS machines, PLCs, radios, and other industrial equipment. Powered directly by USB, it requires no external power supply and installs easily with plug-and-play functionality on Windows, macOS, and Linux systems. This 4-port adapter is a dependable solution for both office and industrial environments.