6es7972-0cb20-0xa0 vs 6gk1571-0ba00-0aa0 6GK1571-0BA00-0AA0 PC adapter USB A2 USB adapter (USB V2.0) for connection of a PG/PC or notebook to SIMATIC S7 via PROFIBUS or MPI contains USB cable 5 m, MPI cable 0.3 m can be used under Windows XP/Vista/ Windows 7 32/64-bit and higher 6ES7972-0CB20-0XA0 Siemens usb-mpi s7-200/300/400 plc cable 6es7972-0cb20-0xa0 SIMATIC S7, … Read more