The installer contains a registration name and serial key already embedded, so you don't have to enter them manually after installation.
The result: a single PowerISO_v4_PR_Silent.exe that installs and registers silently on any target PC. PowerISO v.4 -Pre-Registered- -Silent Install-
"Pre-registered" files found on third-party sites or forums are frequently bundled with trojans, miners, or spyware. The installer contains a registration name and serial