The XM-PEX-2S Dual RS232/Serial Port PCI Express (PCIe) Adapter Card is designed to add two 9-pin RS232/Serial ports to your PCI Express enabled desktop computer. This dual port RS232/Serial PCIe adapter card features 256-byte FIFO buffer to support fast data transferring to ensure optimal performance in multitasking environment. This is a high performance adapter card to add two RS232/Serial ports for connecting additional serial-based devices such as a POS system, industrial testing and control device, security system, logistic management equipment and more. Both standard and low profile bracket are provided to accommodate any form factor of computer system.