Posted 05 November 2009 - 07:01 AM
System builder (OEM) Windows is licensed to be installed on a new computer and only ever used on that computer - that is the license cannot be transferred to another computer in the future. Microsoft provides no user support, the system builder is responsible to provide any required support for installation and use of the OS.
A retail Windows version is licensed to be installed on either a new or existing computer, and the license can be transferred to a different computer if the original computer fails or is replaced and the Windows installation removed from the original system. Microsoft offers user support.
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