ASRock Z170 OC Formula User Manual - Page 35

Bios A Or Bios B.

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Z170 OC Formula PCIe ON/OFF Switch (SWITCH1) (see p.7, No. 39) ON 1234 1: PCIE1 2: PCIE2 3: PCIE4 4: PCIE6 PCIe ON/OFF Switch allows you to enable and disable the corresponding PCIE x16 slots. When one of the installed PCIE x16 cards is out of order, you can use PCIe ON/OFF Switch to ind out the faulty one just with a single click without removing the cards. 1. Make sure that you power of the system before changing the switch. 2. When you turn of PCIe ON/OFF switch, your PCIE card could be burnt if it was poorly designed. For more information about your card's speciications please contact the card's vendor. 3. PCIe ON/OFF switch is for debug only. If you do not want to use your PCIE card, please remove it from the motherboard. Slow Mode Switch (SLOWMODE1) (see p.7, No. 34) ON If Slow Mode is on, the processor runs at lowest fre- OFF quency. BIOS Selection Switch (BIOS_SEL1) (see p.7, No. 27) AB BIOS Selection Switch allows the system to boot from either BIOS A or BIOS B. his motherboard has two BIOS chips, a primary BIOS (BIOS_A) and a backup BIOS (BIOS_ B), which enhances the safety and stability of your system. Normally, the system will work on the primary BIOS. However, if the primary BIOS is corrupted or damaged, just lip the BIOS Selection Switch to "B", then the backup BIOS will take over on the next system boot. Ater that, use "Secure Backup UEFI" in the UEFI Setup Utility to duplicate a working copy of the BIOS iles to the primary BIOS to ensure normal system operation. For safety issues, users are not able to update the backup BIOS manually. Users may refer to the BIOS LEDs (BIOS_A_LED or BIOS_B_LED) to identify which BIOS is currently activated. English 29

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29
English
Z170 OC Formula
PCIe ON/OFF
Switch
(SWITC³1)
(see p.7, No. 39)
PCIe ON/OFF Switch allows
you to enable and disable the
corresponding PCIE x16 slots.
When one of the installed
PCIE x16 cards is out of order,
you can use PCIe ON/OFF
Switch to ±nd out the faulty
one just with a single click
without removing the cards.
Slow Mode Switch
(SLOWMODE1)
(see p.7, No. 34)
If Slow Mode is on, the
processor runs at lowest fre-
quency.
BIOS Selection
Switch
(BIOS_SEL1)
(see p.7, No. 27)
BIOS
Selection Switch allows
the system to boot from either
BIOS A or BIOS B.
ON
1234
1: PCIE1
2: PCIE2
3: PCIE4
4: PCIE6
ON
OFF
A
B
His motherboard has two B±OS chips, a primary B±OS (B±OS_A) and a backup B±OS (B±OS_
B), which enhances the safety and stability of your system. Normally, the system will work
on the primary B±OS. ´owever, if the primary B±OS is corrupted or damaged, just µip the
B±OS Selection Switch to “B”, then the backup B±OS will take over on the next system boot.
ATer that, use “Secure Backup UE³±” in the UE³± Setup Utility to duplicate a working copy
of the B±OS Iles to the primary B±OS to ensure normal system operation. ³or safety issues,
users are not able to update the backup B±OS manually. Users may refer to the B±OS LEDs
(B±OS_A_LED or B±OS_B_LED) to identify which B±OS is currently activated.
1.
Make sure that you power oF the system before changing the switch.
2. When you turn oF PC±e ON/O³³ switch, your PC±E card could be burnt if it was poorly
designed. ³or more information about your card’s speciIcations please contact the card’s
vendor.
3.
PC±e ON/O³³ switch is for debug only. ±f you do not want to use your PC±E card, please
remove it from the motherboard.