Amazon.com: PC USB PLC Programming Cable Adapter, MPI PPI DP port Supported with Connecting Line Compatible with S7-200 S7-300 S7-400 : Electronics
Siemens S7 200 USB Isolated PPI PLC communication cable - PLCCable.com - Automation Supplies and PLC Tools
Siemens PC PPI Cable
Amazon.com: Compatible with Siemens PLC Programming Cable S7-200/300/400 Data Download Line 6ES7972-0CB20-0XA0,USB/MPI PC Adapter USB Cable for Siemen S7-200/300/400 PLC MPI/DP/PPI Programming Cable : Electronics