Explicitly mentioning it is a ZIP file helps users know they will need a tool like WinZip , 7-Zip , or their OS's built-in extractor to open it.
Since "DN75 KKITA zip" appears to be a specific custom file (likely related to keyboard firmware, modding, or a localized software package), a proper text for a download link or button depends on where you are using it. Here are a few options based on common use cases: For a Website Button or Link "Download DN75 KKITA (ZIP Archive)" Download DN75 KKITA zip
"Click here to download the DN75 KKITA zip file." Version Specific: "Download DN75 KKITA v1.0 [.zip]" For a Technical Manual or Instructions Explicitly mentioning it is a ZIP file helps
"Grab the DN75 KKITA zip for the latest updates and patches." Best Practices for File Downloads or a localized software package)