Right-click only the .part1.rar file and select "Extract Here" or "Extract to [Folder Name]". The software will automatically pull data from the other parts to rebuild the original file.
Install an extractor like WinRAR or 7-Zip . sc23970-CDSv100166.part1.rar
Likely a specific catalog or content delivery service (CDS) ID. How to Extract the Content Right-click only the