The PCI To RS422&RS485 Converter Is A Universal Converter From PCI To RS485&RS422. It Requires No Additional Power Supply And Is Compatible With PCI RS422 And RS485 Standards. It Can Convert Pci Signals Into Balanced Differential RS422 Or RS485 Signals. Each Line Has Surge Protection And Surge Voltage Protections. The Tiny Capacitance Distance Ensures The RS422/RS485 High-Speed Transmission Interface. RS422/RS485 Is Connected Through Rj45 And Db9 Interface. The Converter Has A Built-In Zero-Delay Automatic Transceiver, And The I/O Circuit Automatically Controls The Direction Of Data Flow. It Does Not Require Any Handshake Signals (Such As , Dtr, Etc.) And Jumper Groups To Achieve Full-Duplex And Half-Duplex Mode Conversion, Plug And Play. All Existing Communications Software And Hardware Interfaces To The Product. Description: Function: Pci To RS422/RS485 Converter Supports Four Communication Modes: 1. Point-To-Point/4-Wire Full Duplex. 2. Point-To-Multipoint/4-Wire Full Duplex 3. Point-To-Point/2-Wire Half-Duplex. 4. Point-To-Multipoint/2-Wire Half-Duplex Connection Port: DB-9 Working Mode: Asynchronous Work, Point-To-Point Or Point-To-Multiple, Full-Duplex 4 Lines, Half-Duplex 2 Lines Communication Signal: Rs422 Signal: T/R+, T/R-, Rxd+, Rxd, Gnd Rs485 Signal: T/R+, T/R, Gnd Transmission Medium: Twisted Pair Or Shielded Wire Transmission Rate: 38400bps At 600m, 9600bps At 1.2km Signal Rate: 75-128000bps (Automatic Detection) Load Capacity: Each Converter Allows Connection Of 32 Rs422&Rs485 Or More Devices Operating Environment: -25~70, Relative Humidity 5%~95% Tips: Each Serial Signal Is Used To Attach A Transient Diode, Which Can Prevent Crosstalk Of Signals 400w Surge And Improve Communication Stability. Pin-In Photoelectric Isolation And Dc-Dc Volta Converter Can Effectively Isolate External Pressure And Avoid The Impact Of Equipment. Application: Windows 98se/Windows 2000/Xp/Server 2003/Vista/Win7/Win8 32/64 Bit, Linux/ Available Pci Slots Material: PCB Color as shown Package Contents: 1 x PCI MCS9865 RS485&RS422 Conversion Card 2 x DB9 To 6-PIN Connector 1 x CD-Driver Note: Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use 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.