Asus RS520-E6/ERS8 - Manual (Page 80)

5-20 Chapter 5: BIOS setup
USB Functions [7 USB Ports]
Allows you to configure the amount of USB ports to be enabled.
Configuration options: [Disabled] [2 USB Ports] [4 USB Ports] [6 USB Ports]
[7 USB Ports]
USB Port Configure [6+6 USB Ports]
Configuration options: [6+6 USB Ports] [8+4 USB Ports]
USB 2.0 Controller [Enabled]
Allows you to enable or disable the USB 2.0 controller. This item cannot be
configurable if you set the USB Functions item to [7 USB Ports].
Configuration options: [Enabled] [Disabled]
HDA Controller [Enabled]
Allows you to enable or disable the High Definition Audio controller.
Configuration options: [Enabled] [Disabled]
SLP_S4# Min. Assertion Width [1 to 2 seconds]
Configuration options: [4 to 5 seconds] [3 to 4 seconds] [2 to 3 seconds]
[1 to 2 seconds]
Intel VT-d Configuration
Intel VT-d [Disabled]
Allows you to enable or disable the Intel Virtualization Technology for
Directed I/O.
Configuration options: [Disabled] [Enabled]
BIOS SETUP UTILITY
Advanced
Intel VT-d [Disabled]
Options
Disabled
Enabled