MICROSOFT WINDOW 8.1
C3MCJ-RQXB6-WCHYG-C9WKB professional
XHQ8N-C3MCJ-RQXB6-WCHYG-C9WKB PRO
NTTX3-RV7VB-T7X7F-WQYYY-9Y92F PRO
Use this Key during installation to activate....
Windows 8 (core): 334NH-RXG76-64THK-C7CKG-D3VPT Windows 8 PRO:
XHQ8N-C3MCJ-RQXB6-WCHYG-C9WKB Industry 8.1 edition Product key