The PCI2S2PMC 2S2P PCI Serial/Parallel Combo Card (16C1050 UART) adds 2 RS232 serial, and 2 IEEE-1284 Parallel ports to your system, through a PCI slot. Supporting RS232 speeds up to 115.2 Kbps and parallel rates up to 1.5 Mbps, the serial/parallel Adaptor offers the added connectivity needed for industrial and business applications, while only occupying a single 3.3/5V PCI slot. This 2S-2P card offers a broad operating system compatibility list that includes Windows 7, Windows Server 2003, XP, DOS and Linux, for simple integration into mixed environments. Backed by a StarTech.com Lifetime warranty and free lifetime technical support. Unique 2S2P card design allows you to add 2 Serial and 2 Parallel ports using only a single PCI slot Universal support for 32/64-bit, 3.3/5V PCI or PCI-X slots makes this a suitable expansion card for almost any system Broad OS compatibility, including Windows and Linux for simple integration into mixed environments.