This USB to Serial RS232 Adapter with FTDI (1-Port) converts an available USB 1.1 or 2.0 port into an RS232 null modem serial DB9 port, solving DCE/DTE conflicts directly, without requiring additional cross-wired serial cables or adapters. Extremely Versatile. Suited for several industries, this DB9 serial adapter is perfect for IT Administrators looking to add legacy functionality to newer notebooks, PCs and servers that lack an integrated RS232 port. It is also ideal for connecting and programing LED and digital signage boards with serial communication ports, as well as bar code scanners, receipt printers and other POS devices. Convenient and Customizable. This lightweight and compact serial converter features COM retention, allowing the same COM port value to automatically be re-assigned to the port if the adapter cable is disconnected and re-connected to the host computer, or if the system is rebooted. The integrated FTDI chipset supports additional customization, advanced features, and compatibility not necessarily offered by other solutions. Compatible with a Variety of Systems. The USB to RS232 serial adapter is compatible with a broad list of operating systems including Windows , Windows CE, Mac OS and Linux, making it easier to integrate into mixed environments. This serial converter is backed by a StarTech.com 2-year warranty and free lifetime technical support. .