NM-B451…Membership Required You must be a member to access this content.View Membership LevelsAlready a member? Log in here Post navigationLENOVO IDEAPAD Z50-75 ACLU7 , ACLU8 NM-A291 REV: 1.0 A15YA MAIN BOARD REV: 2.1 DNS A17FD 0154217 PEGATRON A15YA REV:2.1 BIOS TESTED OK