BROAD COMPATIBILITY: The USB to VGA adapter offers a professional grade solution for connecting legacy or industrial RS232 serial devices to a laptop or desktop computer through USB. COM RETENTION: The USB to serial RS232 adapter retains assigned serial COM port values in nonvolatile memory to automatically be assigned to the adapter serial port if disconnected and reconnected. EASY INTEGRATION: A versatile connectivity solution for legacy serial peripheral devices, the USB to RS232 adapter cabler offers broad OS compatibility including Windows, Linux and Mac OS. VERSATILE FUNCTIONALITY: This USB serial adapter is used to connect, monitor and control industrial sensors and equipment. It can also be used to control LED and Digital signage boards. THE STARTECH.COM ADVANTAGE: StarTech.com offers a 2-year warranty and free lifetime technical support on this USB to RS232 adapter and has been the choice of IT professionals for over 30 years.