Microsoft Windows Vista Home Basic 32 bit SP1 OEM

Vista Home Basic Edition is the latest release of Microsoft's popular Windows operating system. Home Basic is the edition designed for home users that only require a basic, yet secure and easy-to-use operating system. Comparable to Windows XP Home Edition, Vista Home Basic offers improved security features compared to previous versions of Windows, an intuitive user interface, and more powerful searching tools. For all this and more, consider purchasing Vista Home Premium or Ultimate.

• The Vista Experience
  Vista Home Basic isn't as graphics-heavy as higher versions of Vista, but it is still one of the most secure versions of Windows available. Instant Search quickly scans for documents and files on your system, and the new Internet Explorer 7.0 browser makes it easy to search and surf the web safely.
  
• Data and computer security
  Vista Home Basic contains security features like Windows Defender to help keep your system spyware-free and your private data private. Internet Explorer 7.0 (IE7) offers new anti-phishing tools to check the safety of each site you visit. Additionally, Home Basic offers customizable parental controls to help keep your children safer online.
  
• Additional features
  Vista Home Basic includes Windows Photo Gallery and Windows Media Player 11 to let you organize and share media files and photos. Performance Self-Tuning and diagnostics keep your computer optimized and running smoothly, and Vista Easy Transfer can transfer files from an old PC to a new one.

OEM "Original Equipment Manufacturer" Software is distributed to companies like Dell, IBM & HP for installation on new machines.  The main difference is that OEM can not be used as an upgrade, any previous or trial versions of the software must be uninstalled before installing an OEM.  The packaging is typically CD & License, no box.  OEM Software does not come with installation support from the manufacturer.