1.9 Jumpers
Clear RTC RAM (CLRTC)
This jumper allows you to clear the Real Time Clock (RTC) RAM in CMOS. You can
clear the CMOS memory of date, time, and system setup parameters by erasing
the CMOS RTC RAM data. The onboard button cell battery powers the RAM data in
CMOS, which include system setup information such as system passwords.
Except when clearing the RTC RAM, never remove the cap on CLRTC jumper default
position. Removing the cap will cause system boot failure!
To erase the RTC RAM:
1. Turn OFF the computer and unplug the power cord.
2. Move the jumper cap from pins 1-2 (default) to pins 2-3. Keep the cap on pins 2-3
for about 5~10 seconds, then move the cap back to pins 1-2.
3. Plug the power cord and turn ON the computer.
4. Hold down the
<Del> key during the boot process and enter BIOS setup to reenter
data.
• In single VGA card mode, use the PCIe 2.0 x16_1 slot (blue) for a PCI Express x16
graphics card to get better performance.
• We recommend that you provide sufcient power when running CrossFireX™ mode.
See page 1-21 for details.
• Connect a chassis fan to the motherboard connector labeled CHA_FAN1/2 when using
multiple graphics cards for better thermal environment.
VGA conguration
PCI Express operating mode
PCIe x16_1 PCIe x16_2
Single VGA/PCIe card x16 (Recommended for single VGA card) N/A
Dual VGA/PCIe card x16 x4
F1A75
F1A75 Clear RTC RAM
1 2 2 3
Normal
(Default)
Clear RTC
CLRTC
ASUS F1A75 1-17
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General
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