805 or higher
*Before using the new Intel 4th Gen Core processors, Asus suggests that you first download the BIOS updater for new Intel 4th Gen Core Processors and then update the BIOS using this tool.
BIOS-Utilities
Version 2.00.02
2014/02/28
7.16 MBytes
BIOS updater for New 4th Gen Intel Core Processors
https://www.asus.com/us/Motherboards/H87PLUS/HelpDesk_Download/