PMPMS646, PMPMS647 -Vig646M/Vig647M -H61I-E35/W8 / H61I-E35 V2/W8  

For Windows 8 and 8.1 operating system use BIOS: V7.6B6 

E7677IV1 (V7.6B6) E7677IV1.766                                              
Date: 18/05/2018 

Update:
 -Intel Spectre & Meltdown Vulnerabilities
-CPU Micro code update