Microsoft never released an official "portable" version of Office 2007. Any portable version found online is created by third parties—often using virtualization tools like VMware ThinApp—and distributed unofficially. Risks of Unofficial Portable Office 2007
Download a verified portable app (like LibreOffice Portable). Run the .paf.exe or extraction file. Select your USB drive as the destination. Download Ms Office 2007 Portable
Microsoft Office is proprietary software. Downloading a cracked "portable" version is software piracy. While Microsoft rarely sues individual users, using unlicensed software in a business setting opens you up to serious legal liability and fines. Microsoft never released an official "portable" version of