QDI N2, Manual, Page: 19 / 66

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Manual for N2 series
Chapter 2
BIOS-Protect Jumper (JAV)
The BIOS of the mainboard is contained inside the FWH. If the jumper JAV is set as closed,
you will be unable to flash the BIOS. However in this status, the system BIOS is protected
from being attacked by serious virus such as CIH virus.
Setting the jumper JAV as open(default), meanwhile disabling the “Flash Write Protect” item
of “Advanced BIOS Features ” in AWARD BIOS CMOS Setup, allows you to flash the BIOS
to the FLASH ROM.
The DMI (Desktop Management Interface) system information such as the CPU type/speed,
memory size, and expansion cards will be detected by the onboard BIOS and stored in the
flash ROM. Whenever the system hardware configuration is changed, DMI information will
be updated automatically. However, setting jumper JAV as closed makes flashing BIOS and
updating DMI information impossible. Therefore, set JAV as open when changing the sys-
tem hardware configuration, or the error message “Unknown Flash Type” will be displayed
on the screen, and DMI information update will be fail.
Jumper Settings
Jumpers are located on the mainboard, the yare, clear CMOS jumper JCC, enable BIOS
Protection function jumper JAV etc. Pin 1 for all jumpers are located on the side with a thick
white line (Pin1
→
), referring to the mainboard’s silkscreen. Jumpers with three
pins will be shown as to represent pin1 & pin2 (“1-2”) closed and to
represent pin2 & pin3 (“2-3”) closed.
Jumper Symbol Description Represent
set pin1 and pin2 closed
set pin2 and pin3 closed
close set the pins closed
open set the pins opened
Flash Write Disabled
Flash Write Enabled
1
1
(Default)
JAV
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