StarTech.com 4 Port Native PCI Express RS232 Serial Adapter Card with 16950 UART (PEX4S952)<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>High Performance Dual Channel Oxford 950 UART</li><li>Native single-Chip， single lane PCI Express</li><li>Standard and low profile bracket included</li><li>Less load on the CPU</li><li>128-byte deep FIFO per transmitter and receiver</li><li>Automated in-band software flow control using programmable Xon/Xoff in both directions</li><li>Automated out-of-band hardware flow control using Tx/Rx/RTS/CTS/DSR/DTR/DCD/RI/GND</li><li>Compliant with IEEE1284， SPP/EPP/ECP parallel port</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41BsGPgw3bL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/4121E-YobpL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51pKU7MXuKL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51K3vCZoBAL.jpg" noproxy>