1. Transmission medium: twisted pair cable or shielded cable 2. Interface protection: 500W surge protection, 20KV ESD protection for all serial ports 3. UART interface supports 7 or 8 data bits, 1 or 2 stop bits and even/odd/mark/space/none 4. Flow control: None, hardware and Xon/Xoff 5. Sleep mode with wake-up indicator light Load capacity: supports point-to-multi-port transmission, each converter can connect 32 RS422 or -485 interface devices Working temperature range: -40℃-85℃ Application areas Next generation point of sale system Remote access server Storage network management Factory automation and process control Multi-port -232/-422/-485 card System Requirements 2000/XP/Server 2003/Vista/Win 7/Win 8/Win 8.1 /Win 10, 32 or 64bit Linux2.6.27,2.6.31,2.6.32,3.x.x higher There is one free PCI Express slot available on board: X1/X2/X4/X8/X16 Note: Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Not Affect The Use Colour:As Shown Material:PCB Package Contents: 1 x PCI-E XR17V358 RS422/RS485 Multi-Port I/O Card 1 x CD Driver 8 x DB-9pin to 5pin Converter 1 x Serial 44pin to 9pin Cable 1 x Short Iron Piece/2U Chassis Bezel 1 x English Manual 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.