The edition includes all features of the standard version, plus:
Microsoft provides generic "placeholder" keys that allow you to install the OS but . These are useful if you need to finish an installation before entering your own legal key later. Windows 8.1 Pro : XHQ8N-C3MCJ-RQXB6-WCHYG-C9WKB . Windows 8.1 PRO Build 9600 Product Key. - Microsoft Q&A cle de produit windows 8.1 professionnel build 9600