PCIe 2.0 Gen 1 compliant. x1 Link, dual simplex, 2.5 Gbps in each direction 15 KV ESD protection for all serial ports. Sleep mode with wake-up Indicator Transmission media: twisted-pair cable or shielded cable Direction control: Adopt the technology which automatically controls the data-flow direction,automatically distinguish and control the data-transmission direction; Eight independent UART channels controlled with 16550 compatible register Set 256-byte TX and RX FIFOs Programmable TX and RX Trigger Levels<br><br>TX/RX FIFO Level Counters Fractional baud rate generator Automatic RTS/CTS or DTR/DSR hardware flow control with programmable hysteresis Automatic Xon/Xoff software flow control UART interface support for 7 or 8 data bits,1 or 2 stop bits and even/odd/mark/space/none Flow control none,hardware and xon/xoff Extended operating temperature range; -40 to 85⁰C System Requirements Windows OS Linux 2.6.27, 2.6.31, 2.6.32, 3.x.x and newer A available mini PCI Express slot Applications Next generation Point-of-Sale Systems Remote Access Servers Storage Network Management Factory Automation and Process Control Colour: As Shown Material: PCB<br><br>Package Contents: 1 x Serial Port Module 8 x Serial Lines<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.