Lanner FW-7575 - Manual (Page 35)

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Bios Settings
Chapter 4
Network Application Platforms
North/South Bridge
The chipset menu will let you further configure your Intel
CPU and PCH capabilities:
VT-d
Select to enable or disable The Intel Virtualization
Technology for Directed I/O. As of the three Intel
Virtualization Technology suites, the VT-d support on Intel
platforms provides the capability to ensure improved
isolation of I/O resources for greater reliability, security,
and availability.
The other elements of virtualization suite can be found
and enabled in the following BIOS menu:
The processor: enable the Intel VT-X in the CPU
Configuration on the Advanced tab.
The chipset: Intel Virtualization Technology for Directed
I/O (Intel VT-d).
I/O devices: Intel Virtualization Technology for Connectivity
(Intel VT-c) is built in the supported Ethernet Controller.
SLP_S4 Assertion Width
Select the mininum assertion width of the SLP_S4# signal.
This field indicates the minimum assertion width of the
SLP__S4# signal to ensure that the DRAM modules have
been safely power-cycled. SLP_S4# is a signal for power
plane control. This signal shuts off power to all non-critical
systems when in the S4 (Suspend to Disk) or S5 (Soft Off)
state.