The HII Configuration Utility is a part of the server board BIOS setup utility. The MegaRAID Human Interface Infrastructure (HII) configuration utility is a tool for configuring controllers, physical disks, and virtual disks, and for performing other configuration tasks in a pre-boot, UEFI environment. The RAID option ROM is where the RAID BIOS configuration takes place. The hardware on the computer contains UEFI capable option ROMs (or OpROMs) that can be configured.
The Unified Extensible Firmware Interface (UEFI) is a miniature operating system that can access hardware on the computer.