<p>The PEX2S1P553B 2S1P PCI Express Serial Parallel Combo Card with Breakout Cable combines the functionality of Parallel and Serial cards, adding 2 RS232 serial ports and 1 parallel port through a single PCI Express (PCIe) slot.</p> <p>Suitable for almost any computer, the card offers a low profile/half-height design and includes an optional full-height bracket. The included break-out cable uses a single connector on the card to deliver 3 ports, avoiding crowded connections that can occur with fixed/static ports. Compatible with a broad range of operating systems including DOS, Windows&reg, 7/Server 2008 R2/Vista/XP/Server 2003/2000/98SE (32/64 bit), Linux and Mac OS X.</p> <p>The card also features a native single-chip design that provides improved speed and reliability while reducing the CPU load by as much as 48% over conventional (bridge chip) cards.</p> <p>This product is a replacement for our PEX2S1P552B card.</p> <p>Backed by a StarTech.com Lifetime warranty and free lifetime technical support.</p> <p><a id="gfk-spex-minisite" rel="nofollow" href="javascript:void(0)" onclick="javascript:window.open('//content.etilize.com/mini-site/en_us/1021936889.html', '_blank', 'height=800, width=780, resizable=yes, scrollbars=yes, toolbar=no, menubar=no, location=no, directories=no, status=no'), return false, ">More from the Manufacturer</a></p>