Star Tech.com USB (Universal Serial Bus)-C to Serial Adapter with COM Retention Add a serial port with this USB (Universal Serial Bus) C to serial with COM port retention Features USB (Universal Serial Bus)-C to straight-through RS232 DB9 serial adapter High-speed 921.6 Kbps Baud Rate COM port assignments maintained across reboot Perfect for IT Administrators looking to add legacy functionality to newer notebooks, PCs & servers that lack an integrated RS232 port