Communications processor CP 5611 A2 PCI card (32 bit; 3.3/5 V; 33/66MHz) to Connection of a PG or PC with PCI Bus to PROFIBUS or MPI (no Windows) 9x support!) currently Only 32-bit support with SIMATIC NET V8.2 Software! Only for old applications, Down Windows XP is 6GK1561-2AA00 recommended see http:/support. automation.siemens. com/WW/view/ DE/84138725