This SIIG PCI Express dual profile 16550 serial I/O card with 4 ports and a JJ-E40011-S5 model number is a classic style hardware interface that is compatible with Windows operating systems. Its dimensions are 4.72 x 3.66 x 0.87 inches, while it weighs 1.6 ounces. With a PCI to PCIe 2.0 x1 to 4x interface, this card offers baud rates up to 921Kbps. Made in Taiwan, this network card is an ideal interface/add-on card for computer components and parts and is perfect for use in computers/tablets and networking.