The Manhattan Serial PCI Express Card quickly and easily adds two DB9 ports to PCI Express-enabled desktop systems to connect and communicate with serial peripheral devices. Easily adds two configurable serial ports to a desktop computer. Fits PCI Express x1, x4, x8 and x16 lane buses. Fits standard and low-profile PCI slots. Plug-and-play installation; hot-swappable; Windows compatible. 3 Year Warranty