Asus RS500A-X6/PS4 - Manual (Page 88)

5-24 Chapter 5: BIOS setup
HT Link Tristate [Auto]
Configuration options: [Auto] [Disabled] [CAD/CTL] [CAD/CTL/CLK]
NB Deempasies Level [Disabled]
Configuration options: [Disabled] [-0.4dB] [-1.32dB] [-2.08dB] [-3.1dB]
[-4.22dB] [-5.50dB] [-7.05dB]
IOMMU [Disabled]
Configuration options: [Disabled] [Enabled]
VGA ROM Boot Priority [PCIE VGA Card]
Allows you to select the primary video controller
Configuration options: [PCIE VGA Card] [Onboard VGA]
Debug Option
Memory Decode on Sec. GFX [Disabled]
Configuration options: [Disabled] [Force]
IOC Peer-to-Peer Mode [Auto]
Configuration options: [Auto] [Default] [Mode 1] [Mode 2]
Northbridge interrupt pin [Disabled]
Configuration options: [Disabled] [Enabled]