Ensure you own the physical copies of any games contained within the archive to comply with local copyright laws.
Right-click the file and select "Extract to 807h/" . Because these archives often contain thousands of small files, extracting to a dedicated folder prevents clutter. Verification (Optional but Recommended) 807h.7z
These sets often contain multiple versions of the same game (US, Japan, Europe). Use a ROM manager like ROMVault or clrmamepro if you want to filter down to a "1G1R" (1 Game, 1 Region) set to save space. Ensure you own the physical copies of any