The PCI1S550 1-Port Serial PCI I/O Card from StarTech.com adds 1 additional serial port to a PC allowing users to connect hardware with serial interfaces such as modems, PDAs, digital cameras, serial printers, digitizer tablets, label printers and ISDN terminal adapters to their PC. The PCI1S550 works with any PC (drivers for Windows® XP / Me / 2000 / 98 / 95 / 3.1 / NT / Linux and DOS are included). It is easy to install and use thanks to its step-by-step instruction manual and its Plug-and-Play connectivity. IRQ sharing feature also eliminates IRQ conflicts. A high-speed 16550 UART 9-pin serial port transfers data at up to 920 Kbps baud rate, ensuring that connected hardware runs at peak performance. Also, built-in 16 byte FIFO buffers work to increase data speeds when multitasking.