Zotac H55 series

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Conguring the BIOS
Intel TXT(LT) Conguration
The menu allows you to congure Intel TXT(LT) Parameters.
Intel VT-d Conguration
The menu allows you to enable or disable Intel VT-d technology.
ACPI Conguration
The items in this menu allow you to set General ACPI Conguration, Advanced ACPI
Conguration and South Bridge ACPI Conguration.
PCIPnP
The PCIPnP menu shows the congurations of PCI bus system and PnP features.
Press <enter> to display the conguration options:
q Clear NVRAM
The item allows you to select whether clear NVRAM during system boot.
q Plug and Play O/S
When set to [No], BIOS congure all the devices in the system. When set to
[YES] and if you install a Plug and Play operating system, the operating system
congures the Plug and Play devices not required for boot.
q PCI Latency Timer
Allows you to select the value in units of PCI clocks for PCI device latency timer
register.
q Allocate IRQ to PCI VGA
When set to [YES], BIOS assigns an IRQ to PCI VGA card if the requests for an
IRQ. When set to [No], BIOS does not assign an IRQ to the PCI VGA card even
if requested .
q Palette Snooping
When set to [Enabled], the pallete snooping feature informs the PCI devices that
an ISA graphics device is installed in the system so that the latter can function
correctly.
q PCI IDE BusMaster
When set to [Enabled], BIOS use PCI busmastering for reading /writing to IDE
drives.
q OffBoard PCI/ISA IDE Card
Use this option to set the PCI slot number for some PCI IDE Cards holding.
q IRQ3/4/5/7/9/10/11/14/15
These items allow you to set the Interrupt Request.
q DMA Channel 0/1/3/5/6/7
Use these items to set the Direct Memory Access Channel.
Security
The security menu items allow you to change the system security settings. Press
<enter> to display the conguration options:
q Change Supervisor/User Password
Select this item to set or change the supervisor/user password. The Supervisor/
User Password item on top of the screen shows the default setting: [Not Installed].
After you set a password, this item shows [Installed].