StarTech.com 2 Port PCI Express RS232 Serial Adapter Card with 16950 UART - PCIe Serial Card - PCI Express RS232 Card - PCIe RS232 Data transfer rates of up to 460 Kbits/sec for peak serial device performance Automated in-band software flow control using programmable Xon/Xoff in both directions Easy to install and use with full step-by-step instructions 128-byte deep FIFO per transmitter and receiver Automated in-band software flow control using programmable Xon/Xoff in both directions Automated out-of-band hardware flow control using RTS / CTS and/or DSR / DTR Maximum data transfer rate of 460 Kbps PCI 2. 2 and PCI Power Management 1. 0 compliant