"v5.1" strongly suggests a tool rather than an OS. This is likely a fake activator (crack) disguised as an OS modification.
If the download is a .7z or .rar , use 7-Zip or WinRAR to extract the single ISO file (~2 GB). Do not mount the RAR directly. Download- -Windows X-Lite- Optimum 10 Pro v5.1 ...
Always download such "ISO" files from the developer's official site or reputable tech forums to avoid malware. Activation: Download- -Windows X-Lite- Optimum 10 Pro v5.1 ...
On [Date], I accessed the internet and navigated to the website where the software was available for download. The download process was straightforward, and I was able to locate the correct version (Windows X-Lite Optimum 10 Pro v5.1) on the website. Download- -Windows X-Lite- Optimum 10 Pro v5.1 ...