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Asus M5A78L User Manual

Asus M5A78L
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1.9 Jumpers
1. 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.
If the steps above do not help, remove the onboard battery and move the jumper again
to clear the CMOS RTC RAM data. After clearing the CMOS, reinstall the battery.
You do not need to clear the RTC when the system hangs due to overclocking. For
system failure due to overclocking, use the CPU Parameter Recall (C.P.R) feature. Shut
down and reboot the system so the BIOS can automatically reset parameter settings to
default values.
M5A78L Series
M5A78L Series Clear RTC RAM
1 2 2 3
Normal
(Default)
Clear RTC
CLRTC
ASUS M5A78L Series 1-19

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Asus M5A78L Specifications

General IconGeneral
Memory channelsDual-channel
Number of memory slots4
Maximum internal memory16 GB
Supported memory clock speeds1066, 1333, 1600, 1800, 1866, 2000 MHz
Processor socketSocket AM3
Processor manufacturerAMD
Compatible processor seriesAMD Phenom II X2, AMD Phenom II X4, AMD Phenom II X6
USB 2.0 connectors3
S/PDIF out connectorYes
Number of SATA II connectors6
PS/2 ports quantity2
USB 2.0 ports quantityUSB 2.0 ports have a data transmission speed of 480 Mbps, and are backwards compatible with USB 1.1 ports. You can connect all kinds of peripheral devices to them.
Firewire (IEEE 1394) ports0
Audio chipRealtek ALC887
Component forPC
Motherboard chipsetAMD 760G
Audio output channels7.1 channels
Motherboard form factorATX
Motherboard southbridgeAMD SB710
Compatible operating systems-
On-board graphics cardNo
Parallel processing technology supportNot supported
RAID levels0, 1, 10, JBOD
Trial softwareAntivirus
Bundled softwareASUS PC Probe II ASUS Update
LAN controllerRealtek RTL8111E
Ethernet interface typeGigabit Ethernet
BIOS typeAMI
ACPI version2.0a
BIOS memory size16 Mbit
Weight and Dimensions IconWeight and Dimensions
Depth203 mm
Width305 mm

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