ECS H81H3-M5 User Manual

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Chapter 2

26

H81H3-M5 USER MANUAL

Hard Drive Activity LED

Connecting pins 1 and 3 to a front panel mounted LED provides visual indication that

data is being read from or written to the hard drive. For the LED to function properly,

an IDE drive should be connected to the onboard IDE interface. The LED will also

show activity for devices connected to the SCSI (hard drive activity LED) connector.

Power/Sleep/Message waiting LED

Connecting pins 2 and 4 to a single or dual-color, front panel mounted LED provides

power on/off, sleep, and message waiting indication.

Reset Switch

Supporting the reset function requires connecting pin 5 and 7 to a momentary-con-

tact switch that is normally open. When the switch is closed, the board resets and

runs POST.

Power Switch

Supporting the power on/off function requires connecting pins 6 and 8 to a momen-

tary-contact switch that is normally open. The switch should maintain contact for at

least 50 ms to signal the power supply to switch on or off. The time requirement is

due to internal de-bounce circuitry. After receiving a power on/off signal, at least

two seconds elapses before the power supply recognizes another on/off signal.

5. Front Panel Header

The front panel header (F_PANEL) provides a standard set of switch and LED headers

commonly found on ATX or Micro ATX cases. Refer to the table below for information:

Table of Contents

Questions and Answers:

D
Darren RiceAug 1, 2025
What to do if ECS H81H3-M5 Motherboard does not power up?
- D
  Deborah ParksAug 2, 2025
  If your ECS Motherboard isn't powering up and the fans aren't running, try these steps: First, disassemble the PC, removing the VGA adaptor card, DDR memory, LAN, USB and other peripherals including keyboard and mouse, leaving only the motherboard, CPU with CPU cooler, and power supply connected. Ensure the power cord is plugged into the wall and the PSU switch is on. Also, make sure to remove any unused screws or metal objects from inside the PC case to prevent short circuits. Check the CPU FAN connector and the 12V power connector are connected to the motherboard. For Intel platforms, inspect the CPU socket for any damaged or bent pins. Confirm that the 12V power and ATX connectors are fully inserted into the motherboard connectors and that the latches are locked.
M
Mary JenkinsAug 9, 2025
What to do if power is on but there is no display on my ECS Motherboard?
- K
  Kaitlin DuranAug 9, 2025
  If the power is on and the fans are running, but there's no display on your ECS Motherboard, ensure the monitor is on and properly connected to the PC. Check that the VGA adapter card (if applicable) is correctly inserted. Listen for beep sounds, ensuring the internal PC speaker is connected. Continuous 3 short beeps indicate memory not detected, while 1 long beep and 8 short beeps suggest the VGA is not detected.
J
John StewartAug 16, 2025
Why does my ECS H81H3-M5 PC suddenly shut down while booting up?
- S
  sparksjamesAug 16, 2025
  If your PC suddenly shuts down while booting up, it may be due to the CPU overheating. To resolve this, apply thermal grease onto the CPU heatsink and ensure the CPU fan is securely connected to the heatsink. Verify that the CPU fan is functioning correctly while the system is running. You can also try disabling the Smartfan function in the BIOS settings to allow the fan to run at its default speed. Loading Optimized Defaults in the BIOS will also disable Smartfan.

ECS H81H3-M5 Specifications

General

Brand	ECS
Model	H81H3-M5
Category	Motherboard
Language	English

Summary

Chapter 1: Introducing the Motherboard

Motherboard Specifications

Detailed technical specifications of the motherboard, including CPU, chipset, memory, and slots.

Motherboard Component Layout

I/O Ports Description

Chapter 2: Installing the Motherboard

Installation Safety Precautions

Essential safety measures to take before and during motherboard installation to prevent damage.

Motherboard Installation in Chassis

Steps and considerations for physically mounting the motherboard into a computer case.

Processor Installation

Step-by-step guide for correctly installing the CPU into the LGA1150 socket.

CPU Cooler Installation

Procedure for applying thermal grease and mounting the CPU cooler assembly.

Memory Module Installation

Guide on how to properly install DDR3 memory modules into the DIMM slots.

Add-on Card Installation

Explains how to install expansion cards into PCI Express slots.

Connecting Optional Devices

SATA Hard Drive Installation

Steps for connecting SATA hard drives using SATA cables and power connectors.

Connecting Case Components

Fan Power Connector Connections

ATX Power Connector Connections

Guide for connecting the 24-pin ATX and 4-pin ATX12V power supply connectors.

Front Panel Header Connections

Chapter 3: Using BIOS

BIOS Setup Utility Overview

Introduction to the BIOS Setup Utility and its purpose for configuring system parameters.

Entering BIOS Setup

Procedure for accessing the BIOS setup utility by pressing the DEL key during POST.

Resetting Default CMOS Values

Navigating the BIOS Interface

Explains how to interact with the BIOS menus using keyboard and mouse.

BIOS Navigation Keys

Main BIOS Menu Overview

Description of the main BIOS screen, displaying system information and navigation options.

Advanced BIOS Menu

Details the settings available in the Advanced menu for CPU and system configuration.

PC Health Status Monitoring

Smart Fan Control Function

CPU Configuration Settings

Options for configuring CPU-related features like Hyper-Threading and virtualization.

System Component Characteristics

Power Management Setup Options

System Agent Configuration

PCH Configuration Settings

M.I.B. III Menu

Access to settings for clock speed, system bus, and overclocking configurations.

CPU OverClocking Configuration

Options for tuning CPU performance, including ratio, current limits, and speed technologies.

North Bridge Configuration

Memory Configuration

Details and settings for memory profiles, frequency, and timings.

Over Voltage Configuration

Boot Menu Options

Security Menu Settings

Exit Menu Options

Updating the BIOS

Comprehensive guide on how to download and install updated BIOS versions.

Chapter 4: Using the Motherboard Software

Auto-installing Drivers and Software

Running the Setup Wizard

Manual Driver Installation

eSF Smart Fan Utility

Chapter 5: Trouble Shooting

Start Up Problems During Assembly

Troubleshooting steps for issues encountered when first assembling the PC.

Power Issues and No Display

Diagnosing problems related to power on, fan operation, and lack of display output.

System Shutdown During Boot

Addressing issues where the PC shuts down unexpectedly during the boot process, often due to overheating.

Start Up Problems After Prolong Use

Troubleshooting common startup issues that may arise after extended use.

Basic Troubleshooting Flowchart

A visual flowchart to guide users through common troubleshooting scenarios.

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