PCI Express to Serial Adapter 921.6Kbps Windows and Linux CompatibleThis PCI Express RS232 serial adapter card lets you add four RS232 (DB9) serial ports to your computer through a PCI Express (PCIe) slot. The 4 port PCIe serial card enables you to interact with serial devices, such as card readers, printers, PIN pads, and modems, at speeds of up to 921.6Kbps.Maximum CompatibilityWith broad OS support, including for Windows and Linux, this PCI E serial card is easy to integrate into mixed environments. The card comes pre-configured with low-profile brackets and includes optional full-profile brackets, so installation is easy regardless of the case form factor. This card is a direct replacement for PEX4S952LP .Experience Optimal TechnologyThis PCIe to serial adapter supports the following featuresCompatible with industry-standard 16950 UARTSupports max baud rate of up-to 921.6KbpsProvides 5/12V power output on Pin 9 when external power is connected256-byte depth FIFO cache per transmitter and receiverSupports 9, 8, 7, 6, 5 data bits (one per port)Asix AX99100 chipsetPCI Express 1.1 compliantThe Choice of IT Pros Since 1985 conducts thorough compatibility and performance testing on all our products to ensure we are meeting or exceeding industry standards and providing high-quality products to IT Professionals. Our local Technical Advisors have broad product expertise and work directly with our Engineers to provide support for our customers both pre and post-sales.PEX4S03LP is backed by a lifetime warranty and free lifetime technical support.The Advantage