Specification:-Model: 972-OCB20-0XA0 -Standard: USB Adapter for PC, support PPI/MPI/DP communication-Suitable for: support S7-200/300/400 series SIE MENS PLC-Support: XP, VISTA, Win7 32/64bit,WIN8-With Communication indicatorFeatures:1. The signal part by the high-speed optical coupling isolation is same with the original.2. Support for MPI and DP multi-master communication.3. Automatically adapt to the communication rate has 9600,19200,187.5K, 500K, 1.5M4. Support 200PLC and ET200 communications, and PPI multi-master communication.5. Support 840D CNC system programming.6. Install the original driver, without generating serial port, direct to select USB7. Support WIN7 64-bit systems, support V5.5 software (no need to install the drive in V5.5)8. In the shell,there are soft rubber protection, anti-pressure, anti-drop.9. With the PTC resettable fuse, in the condition of overvoltage, overcurrent, short circuit can good protect the internal circuitry.S7-200 / 300/400 series PLC programming adapter cable length of about 4 meters, withcommunication indicator, direct to use the USB interface of STEP7 software, support forPPI / MPI / DP communication,can replace the original Siemens products: 972-0CB20 -0XA0.MPI master automatically adapt to the communication rate has 9600,19.2Kbps and 187.5Kbps,500K, 1.5mkbps DP master communication. With the driver CD, install the original drivers, noneed to generate serial port, just to s elect the USB in software.