Add two RS232 serial ports with COM retention to your laptop or desktop computer through USB Simple installation & operation with COM port retention provides robust connectivity for serial devices Portable USB (Universal Serial Bus)-Powered design requires no bulky power adapter or outlet The FTDI chipset is highly customizable & compatible, making it the ideal solution for any setup The ICUSB2322F 2-Port USB (Universal Serial Bus) to Serial RS232 Adapter Cable with FTDI chipset & COM Retention converts an available USB (Universal Serial Bus) 1.1 or 2.0 port into 2 RS232 serial DB9 ports to connect, monitor & control your serial devices. This compact adapter features COM retention, allowing the same COM port values to automatically be re-assigned to the port if the cable is disconnected & re-connected to the host computer, or if the system is rebooted. Unlike most USB (Universal Serial Bus)-serial adapters, this one uses the FTDI chipset, which supports additional customization, advanced features, & compatibility not necessarily offered by other solutions. This USB (Universal Serial Bus)-serial adapter is compatible with a broad list of Operating Systems, including Windows®, Windows CE, Mac OS & Linux, making this product the perfect solution for integrating into mixed environments. Backed by a Star Tech.com 2-year warranty & free lifetime technical support. What’s in the box 2 Port USB (Universal Serial Bus) to RS-232 Serial Adapter Wall Mounting Kit Driver CD Instruction Manual