Admin desktops & Laptops Support Joined Dec 2, 2017 Messages 31,042 Feb 14, 2018 Thread Author #1 Apple iMac 27" A1312 820-2507-A Bios 820-2507 Attachments Bios_A1312 820-2507-A.zip Bios_A1312 820-2507-A.zip 1.6 MB · Views: 7 Last edited: Dec 11, 2019