SE-SLV354A-2S PCI-E RS422/RS485 multi-port I/O card uses the high-performance -17V354 chipset. Compatible with PCIe GEN2.0 (2.5GT/S), and it has 2 ports, each port has many enhanced features. PCI Express version 2.0 compliant PCI Express X1 supports 2.5Gbps bus bandwidth. Support x1,x2,x4,x8,x16()PCI Express slot RS485 Signal:+(A),-(B),GND; RS422 Signal:+,-,R+,R-,GND. Each port supports 600W surge protection and 15KV ESD signal protection.RS422/RS485 mode switching without jumper setting Application Areas: Next-generation point-of-sale terminals, Remote access server, Storage network management, Industrial automation and remote control Working mode: RS422:asynchronous operation, point-to-point, point-to-multipoint full duplex communication mode RS485:point-to-point, point-to-multipoint half-duplex communication mode Transmission distance:RS485/RS422 mode 1200 meters (9600bps) Transmission medium:twisted pair or shielded wire Interface protection:600W surge protection, 15KV ESD full signal protection, 2500V magnetic coupling isolation protection. Transient common-mode rejection capability: 25KV/s, 1000V DC-DC power supply isolation protection UART supports 5, 6, 7, 8 data bits, 1, 1.5, 2 stop bits. Parity:even, odd, none, flag, space Flow Control:None, Hardware and Xon/Xoff Load capacity:support point-to-multipoint transmission, each conversion port supports more than 32 RS485/RS422 devices Operating Temperature:-40 - 85C System Requirements: Windows 2000/XP/Server2003/Vista/Win 7/Win 8/Win 8.1 /Win 10, 32 or 64bit Linux 2.6.27,2.6.31,2.6.32,3.x.x higher 1 free PCI Express X1/X4/X8/X16 slot on the motherboard Note:Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use Colour:As Shown Material:PCB Package Contents: 1 * PCI Express RS422/RS485 Multi-function I/O Card 1 * CD Driver 1 * DB9pin to 5pin Converter Header 1 * 44pin to 9pin Serial Cable 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.