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Asus P8H77-M User Manual

Asus P8H77-M
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ASUS P8H77-M 1-27
1.9 Jumpers
Clear RTC RAM (3-pin 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!
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, then the BIOS automatically resets parameter settings to
default values.
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 re-enter
data.
P8H77-M
P8H77-M Clear RTC RAM
1 2 2 3
Normal
(Default)
Clear RTC
CLRTC

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Asus P8H77-M Specifications

General IconGeneral
ECCNo
Non-ECCYes
Memory voltage1.5 V
Memory channelsDual-channel
Memory slots typeDIMM
Number of memory slots4
Supported memory typesDDR3-SDRAM
Maximum internal memory32 GB
Supported memory clock speeds1066, 1333, 1600, 1800, 1866, 2000, 2133, 2200 MHz
Supported memory module capacities16GB, 1GB, 2GB, 4GB, 8GB
System bus rate5 GT/s
Processor socketLGA 1155 (Socket H2)
Processor manufacturerIntel
Compatible processor seriesIntel Core i3, Intel Core i5, Intel Core i7
Maximum number of SMP processors1
USB 2.0 connectors3
Number of SATA III connectors2
Number of Parallel ATA connectors0
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.
Audio chipRealtek ALC887
Cooling typePassive
Component forPC
Power source typeATX
Motherboard chipsetIntel H77
PC health monitoringCPU, FAN, Temperature
Audio output channels7.1 channels
Motherboard form factormicro ATX
RAID levels0, 1, 5, 10
Supported storage drive interfacesSATA II, SATA III
Cables includedSATA
Graphics cardHD Graphics
OpenGL version3.2
DirectX version11
Maximum resolution2048 x 1536 pixels
Maximum graphics card memory1696 MB
Parallel processing technology support2-Way CrossFireX, LucidLogix Virtu, Quad-GPU CrossFireX
PCI Express slots version2.0, 3.0
PCI Express configurations1x4, 1x16
LAN controllerRealtek RTL8111F
Wi-Fi standardsNot supported
Networking featuresGigabit LAN
Ethernet interface typeGigabit Ethernet
BIOS typeEFI AMI
ACPI version2.0a
BIOS memory size64 Mbit
Weight and Dimensions IconWeight and Dimensions
Width245 mm

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