Get more out of your serial devices! StarTech.com's PCI4S550N gives you four serial ports for connecting any new or old serial peripheral, with data transfer rates of up to 920 Kbits/sec. Perfect for connecting serial modems, POS devices, PDAs, digital cameras, printers, ISDN terminal Adaptors and more, to your system. Installation is a breeze with support for Windows XP, ME, 2000, 98, 95, NT4, 3.1, DOS and Linux. Plus, IRQ sharing and a PCI plug and play interface, guarantee convenient, hassle-free connections. Backed by StarTech.com's lifetime warranty and FREE LIFETIME tech support.