Contents

About this guide
Notices
P5QL/EPU specifications summary
Safety information
Chapter 1
- Product introduction
  - 1.1 Welcome!
  - 1.2 Package contents
  - 1.3 Special features
    - 1.3.1 Product highlights
    - 1.3.2 ASUS unique features
    - 1.3.3 ASUS Stylish features
    - 1.3.4 ASUS Intelligent Overclocking features
  - 1.4 Before you proceed
  - 1.5 Motherboard overview
    - 1.5.1 Placement direction
    - 1.5.2 Screw holes
    - 1.5.3 Motherboard layout
    - 1.5.4 Layout contents
  - 1.6 Central Processing Unit (CPU)
    - 1.6.1 Installing the CPU
    - 1.6.2 Installing the CPU heatsink and fan
    - 1.6.3 Uninstalling the CPU heatsink and fan
  - 1.7 System memory
    - 1.7.1 Overview
    - 1.7.2 Memory configurations
    - 1.7.3 Installing a DIMM
    - 1.7.4 Removing a DIMM
  - 1.8 Expansion slots
    - 1.8.1 Installing an expansion card
    - 1.8.2 Configuring an expansion card
    - 1.8.4 PCI slots
    - 1.8.5 PCI Express x1 slots
    - 1.8.6 PCI Express x16 slot
  - 1.9 Jumper
  - 1.10 Connectors
    - 1.10.1 Rear panel connectors
    - 1.10.2 Internal connectors
  - 1.11 Software support
    - 1.11.1 Installing an operating system
    - 1.11.2 Support DVD information
Chapter 2
- BIOS information
  - 2.1 Managing and updating your BIOS
    - 2.1.1 ASUS Update utility
    - 2.1.2 Creating a bootable floppy disk
    - 2.1.3 ASUS EZ Flash 2 utility
    - 2.1.4 AFUDOS utility
    - 2.1.5 ASUS CrashFree BIOS 3 utility
  - 2.2 BIOS setup program
    - 2.2.1 BIOS menu screen
    - 2.2.2 Menu bar
    - 2.2.3 Navigation keys
    - 2.2.4 Menu items
    - 2.2.5 Sub-menu items
    - 2.2.6 Configuration fields
    - 2.2.7 Pop-up window
    - 2.2.8 Scroll bar
    - 2.2.9 General help
  - 2.3 Main menu
    - 2.3.1 System Time
    - 2.3.2 System Date
    - 2.3.3 Legacy Diskette A
    - 2.3.4 SATA 1-6
    - 2.3.5 Storage Configuration
    - 2.3.6 System Information
  - 2.4 Ai Tweaker menu
  - 2.5 Advanced menu
    - 2.5.1 CPU Configuration
    - 2.5.2 Chipset
    - 2.5.3 Onboard Devices Configuration
    - 2.5.4 USB Configuration
    - 2.5.5 PCI PnP
  - 2.6 Power menu
    - 2.6.1 Suspend Mode
    - 2.6.2 ACPI 2.0 Support
    - 2.6.3 ACPI APIC Support
    - 2.6.4 APM Configuration
    - 2.6.5 Hardware Monitor
  - 2.7 Boot menu
    - 2.7.1 Boot Device Priority
    - 2.7.2 Boot Settings Configuration
    - 2.7.3 Security
  - 2.8 Tools menu
    - 2.8.1 ASUS EZ Flash 2
    - 2.8.2 Express Gate
    - 2.8.3 AI NET 2
    - 2.8.4 ASUS O.C. Profile
  - 2.9 Exit menu

ASUS P5QL-EPU User Manual

Pages 64

Year 2008

Language(s)

of 64

ASUS P5QL-EPU Motherboard Specification

The ASUS P5QL-EPU motherboard is engineered to support Intel Core 2 processors, including the Core 2 Quad and Core 2 Duo variants, leveraging its LGA 775 socket. It is built on the Intel P43 chipset, ensuring reliable performance and compatibility with a wide range of components. The motherboard accommodates up to 16GB of DDR2 memory across four DIMM slots, supporting speeds of up to 1066 MHz for enhanced multitasking and system responsiveness.

For expansion capabilities, the P5QL-EPU features a PCIe 2.0 x16 slot for high-performance graphics cards, two PCIe x1 slots, and three PCI slots for additional peripherals. It provides comprehensive connectivity options including six SATA 3.0 Gb/s ports, supporting RAID 0, 1, 5, and 10 configurations for robust data storage solutions.

Integrated Realtek ALC1200 8-channel high-definition audio delivers immersive sound quality, while the onboard Gigabit LAN provides fast and stable network connectivity. The motherboard also includes ASUS's EPU (Energy Processing Unit) technology to optimize power efficiency, reducing overall energy consumption without sacrificing performance.

Additional features such as ASUS AI Nap, Q-Fan, and MyLogo2 offer customizable system settings and user-friendly operations. The P5QL-EPU supports a range of operating systems, providing flexibility for various user needs. This motherboard is designed for users seeking a balance of performance, efficiency, and expandability, making it suitable for both home and office environments.

ASUS P5QL-EPU Motherboard F.A.Q.

How do I install RAM on the ASUS P5QL-EPU motherboard?

To install RAM on the ASUS P5QL-EPU, power off your PC and unplug all cables. Open the case and locate the RAM slots on the motherboard. Insert the RAM module into the slot, ensuring it's aligned correctly. Press down until it clicks into place. Repeat for additional modules.

What is the maximum RAM capacity supported by the ASUS P5QL-EPU?

The ASUS P5QL-EPU motherboard supports up to 16GB of DDR2 RAM, with four DIMM slots available for installation.

How can I update the BIOS on my ASUS P5QL-EPU motherboard?

Download the latest BIOS update from the ASUS support website. Save it to a USB drive. Restart your computer and enter the BIOS setup by pressing the 'Delete' key during boot. Use the EZ Flash utility in the BIOS to select and update the BIOS from your USB drive.

Why is my ASUS P5QL-EPU not recognizing my SATA hard drive?

Ensure that the SATA cable is securely connected to both the motherboard and the hard drive. Check the BIOS settings to confirm that the SATA ports are enabled. Try connecting the drive to a different SATA port or replacing the SATA cable.

How do I reset the CMOS on the ASUS P5QL-EPU motherboard?

Power off your computer and unplug it. Locate the CMOS jumper on the motherboard, usually near the battery. Move the jumper from the default position to the clear position for a few seconds, then move it back. Alternatively, remove the CMOS battery for a minute then reinsert it.

What should I do if my ASUS P5QL-EPU motherboard does not power on?

Check the power supply connections to the motherboard and ensure all cables are connected properly. Verify that the power supply unit is functioning by testing it with another system. Inspect for any visible damage on the motherboard.

How can I enable the onboard audio on the ASUS P5QL-EPU?

Enter the BIOS setup by pressing the 'Delete' key during boot. Navigate to the 'Advanced' tab, select 'Onboard Devices Configuration', and ensure that the 'HD Audio Controller' is enabled. Save changes and exit the BIOS.

Can I use a PCIe x16 graphics card with the ASUS P5QL-EPU motherboard?

Yes, the ASUS P5QL-EPU has a PCIe 2.0 x16 slot that supports graphics cards. Ensure your power supply can handle the card's power requirements and install the card securely into the slot.

What is the process for troubleshooting boot issues on the ASUS P5QL-EPU?

Check all cable connections and ensure RAM, CPU, and GPU are seated properly. Listen for any beep codes, which can indicate specific errors. Enter the BIOS to check if all components are recognized. If issues persist, try booting with minimal hardware.

How do I connect front panel connectors to the ASUS P5QL-EPU motherboard?

Refer to the motherboard manual for the front panel header pin layout. Connect the power switch, reset switch, HDD LED, and power LED connectors to the corresponding pins. Make sure each connector is oriented correctly according to the positive and negative markings.