The Rocstor 1ft USB to RS232 Serial DB9 Adapter Cable offers a professional-grade solution for connecting legacy or industrial RS232 serial devices to your laptop or desktop through a USB port, eliminating the need to upgrade serial peripherals. This adapter retains assigned serial COM port values in nonvolatile memory, allowing for seamless reconnections even when switching USB ports. It provides a versatile connectivity solution, bridging older serial devices with newer USB-capable computers, and offers broad compatibility with Windows, Linux, and Mac OS, ensuring easy integration into diverse operating environments. Backed by Rocstor 2-year warranty and free technical support.