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Add two RS232 serial ports with COM retention to your laptop or desktop computer through USBThe ICUSB2322F 2-Port USB to Serial RS232 Adapter Cable with FTDI chipset and COM Retention converts an available USB 1.1 or 2.0 port into 2 RS232 serial DB9 ports to connect, monitor and 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 and re-connected to the host computer, or if the system is rebooted. Unlike most USB-serial adapters, this one uses the FTDI chipset, which supports additional customization, advanced features, and compatibility not necessarily offered by other solutions. This USB-serial adapter is compatible with a broad list of Operating Systems, including Windows®, Windows CE, Mac OS and Linux, making this product the perfect solution for integrating into mixed environments. Backed by a StarTech.com 2-year warranty and free lifetime technical support.The StarTech.com Advantage

Easily connect serial devices through a USB port.Most modern computers and laptops don't have RS232 (DB9) ports, making the use of legacy peripherals and high-tech devices which connect with COM ports almost impossible. The Manhattan USB to Serial Converter - with its serial RS232 (DB9) port and FTDI FT232RL chipset - easily expands a single USB port to connect and support serial modems, barcode scanners, digital cameras, card readers, Ham/Amateur Radios, GPS, CNC machines, telescopes, embroidery machines, fuel injection controllers, PDUs, network switches and other devices.Quality Construction and Easy InstallationGold-plated contacts and rugged construction combine to offer a reliable connection between the computer and serial peripherals for consistent, trouble-free performance. Windows compatibility with plug-and-play installation and hot-swappability help provide seamless use without inconvenient and frustrating device conflicts.