Uniwide UniServer 1522LV User Manual page 32

Case Open Function
The field enables or disables the feature of recording the chassis intrusion status and issuing a warning message
if the chassis is once opened. To clear the warning message, set the field to [Reset]. The setting of the field
will automatically return to [Enabled] later.
CPU Overclock
This item specifies the clock frequency of the CPU host bus (FSB) for end users to overclock the processor.
BIOS Write Protect
This function protects the BIOS from accidental corruption by unauthorized users or computer viruses.
When enabled, the BIOS' data cannot be changed when attempting to update the BIOS with a Flash utility.
To successfully update the BIOS, you'll need to disable this BIOS Write Protect function.
You should enable this function at all times. The only time when you need to disable it is when you want to
update the BIOS. After updating the BIOS, you should immediately re-enable it to protect it against viruses.
Fan Type Control
This setting allows you to select the fan type (3-pin or 4-pin) for fan power management.
Select 3-pin for UniServer 1522LV system.
IOMMU, Size
AMD64, one of the 64-bit architectures, contains a device called the IOMMU (Input/Output Memory Management
Unit). The IOMMU allows 32-bit devices to see all of the (64-bit addressed) main memory although with a 32-bit
address bus you can only address a 32-bit address space. It is an MMU that translates DMA virtual addresses to
real physical addresses.
Size
This setting specifies the memory size for IOMMU.
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