Jp14 Clear Cmos; Jp28 Keyboard/Mouse Wakeup Jumper - AOpen i915Ga-EFRII Easy Installation Manual

Setting CPU Voltage & Frequency
Setting CPU Core Voltage
This motherboard supports Voltage ID (VID) function to detect CPU voltage
automatically during power-on and the range is from 0.8375V to 1.6V. It's not
necessary to set CPU core voltage.
Setting CPU Frequency
This motherboard is CPU jumper-less design, you can set CPU frequency through
1MHz stepping CPU Overclocking in the BIOS. CPU Core Frequency = CPU FSB
clock x CPU Ratio. However, all CPU now selling in the market belong to "Fixed
Multiplier". That means users can not adjust the CPU Ratio but only change CPU
FSB clock to achieve overclocking.
(Users do the overclocking at their own risk!!)
BIOS Setup > Frequency / Voltage Control > CPU Speed Setup
CPU Ratio 8x, 10x... 24x, 25x, 26x, 27x, 28x
CPU FSB
FSB = 100MHz-400MHz by 1MHz Stepping CPU Overclocking
(Adjustment manually)
Processor Number Processor Frequency
5 Series
580 4.00G
570 3.80G
560 3.60G
550 3.40G
540 3.20G
530 3.00G
520 2.80G
3 Series
350 3.20G
345 3.06G
340 2.93G
335 2.80G
Note: With CPU speed changing rapidly, there might be faster CPU on the market by the
time you received this installation guide. This table is kindly for your references only.
Note: Some CPU fans do not have sensor pin so they cannot
support fan monitoring.
Note: Intel 915G / 915P chipset
support LGA775 CPU. LGA775 CPU
could detect the clock ratio
automatically; you may not be able
to adjust the clock ratio in BIOS
manual.
FSB CPU Ratio Cache
800MHZ 20x 1MB L2
800MHZ 19x 1MB L2
800MHZ 18x 1MB L2
800MHZ 17x 1MB L2
800MHZ 16x 1MB L2
800MHZ 15x 1MB L2
800MHZ 14x 1MB L2
533MHZ 24x 256K L2
533MHZ 23x 256K L2
533MHZ 22x 256K L2
533MHZ 21x 256K L2
Warning: Intel 915G / 915P
chipset support maximum 800MHz
(200MHz*4) system bus; higher
clock setting may cause serious
system damage.

JP14 Clear CMOS

You can clear CMOS to restore system default setting. To clear the CMOS, follow
the procedure below.
1. Turn off the system and unplug the AC power.
2. Remove ATX power cable from connector
PWR3
3. Locate JP14 and short pins 2-3 for a few
seconds.
4. Return JP14 to its normal setting by shorting
pin 1 & pin 2.
5. Connect ATX power cable back to connector
PWR3.
Pin 1
1 1
Normal Clear CMOS
(default)

JP28 Keyboard/Mouse Wakeup Jumper

This motherboard provides keyboard / mouse wake-up function. You can use JP28
to enable or disable this function, which could resume your system from suspend
mode with keyboard or mouse. The factory default setting is "Disable" (1-2), and
you may enable this function by setting the jumper to 2-3.
Tip: When should I Clear CMOS?
1. Boot fails because of overclocking...
2. Forget password...
3. Troubleshooting...
Pin 1
1 1
Disable Enable
(Default)