Fangrui Product Details Usb 2.0 To Rs485 Converter And All Kinds Of 485 Interface Docking, Mission Distance Up To 1000 Meters;mainchip:cp2102(silicon Labs) ,industrial Chip, High Quality, Super Stable. The Lead Pins Include: A +, B-, Gnd ,gnd,5v0;industrial Product, With 15kv Esd Protection And Tvs Overvoltage Protection Features:1. Industrial Level Protection: Tvs Ient Suppression Protection, Esd Protection, Surge Protection, Ab Signal Line Short Circuit And Power Supply Short Circuit Protection (short Circuit Does Not Burn 2. Mission Distance Up To 1200 Meters (tested At 9600bps);3. Support The Baud Rate Of 921600, Which Is Much Higher Than 115200, And The Baud Rate Of Pairwise Mutual Mission Is Higher 4. Multi System Supports Hot Plug, Win98 / Ce / 2000/2003/2008 / Xpwn7n8 / Wn10 Vista / Linux / Mac Os X System, And Usb Interface Can Be Hot Plug 5. Automatic Identification And Control Of Data Mission Direction, Without Any Handshake Signal (such As Rts, Dtr, Etc.) And Without Jumper Setting, Mode Conversion Can Be Reali