1.Windows 8.1 standard core oem key .
2.All licence 100% make online active ,not block .
3.Different Coa licence or key are available ,such as Oem ,Dell ,Asus ,Acer etc .
Product range
Windows 7 Professional
Windows 7 Home Premium
Windows 7 Ultimate
Windows 8.0 Professional
Windows 8.0 Core/Standard
Windows 8.1 Professional
Windows 8.1 Core/Standard
Windows Server 2008/2012
Office 2010
Office 2013
Office Mac 2011
Pls contact me if any question ,worktime 9:00am-18pm ,from Monday to Friday .
Email : alisa@fpp-key.com
skype : yw1596321