The first time when we put the cable to the PC and did not yet install the driver the MPI led on the cable will off. Step 1: Install Driver For USB MPI/PPI Cable USB MPI/PPI Cable (PC Adapter USB) from Amsamotion.Software: Step 7 Micro/WIN V4.0 SP9 On Windows 10 圆4 version 21H2.Previous post: Step 7 MicroWIN 4.0 SP9 on Windows 10 Newest (21H2) And All Windows Version PLC S7 200 Programming – Download & Upload Program You can refer to the previous post to install S7 200 PLC programming software, download and upload using a “COM” cable. In this post, 365EVN shows you the steps to download and upload the program for PLC S7 200 using USB PPI Cable On Step7 MicroWIN V4.0 SP9.