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Contents Notices...v Safety information vi About this guide vi P7H55-M LX/USB3 specifications summary viii Chapter 1 Product introduction 1.1 Before you proceed 1-1 1.2 Motherboard overview 1-2 1.2.1 Motherboard layout 1-2 1.2.2 Layout contents 1-2 1.3 Central ...ports 1-8 1.7.2 Internal connectors 1-9 1.8 Software support 1-15 1.8.1 Installing an operating system 1-15 1.8.2 Support DVD information 1-15 Chapter 2 BIOS information 2.1 Managing and updating your BIOS 2-1 2.1.1 ASUS Update 2-1 2.1.2 ASUS EZ Flash 2 2-2 2.1.3 ASUS BIOS Updater 2-3 2.1.4 ASUS CrashFree BIOS 3 2-6 iii
Contents Notices...v Safety information vi About this guide vi P7H55-M LX/USB3 specifications summary viii Chapter 1 Product introduction 1.1 Before you proceed 1-1 1.2 Motherboard overview 1-2 1.2.1 Motherboard layout 1-2 1.2.2 Layout contents 1-2 1.3 Central ...ports 1-8 1.7.2 Internal connectors 1-9 1.8 Software support 1-15 1.8.1 Installing an operating system 1-15 1.8.2 Support DVD information 1-15 Chapter 2 BIOS information 2.1 Managing and updating your BIOS 2-1 2.1.1 ASUS Update 2-1 2.1.2 ASUS EZ Flash 2 2-2 2.1.3 ASUS BIOS Updater 2-3 2.1.4 ASUS CrashFree BIOS 3 2-6 iii
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Contents 2.2 BIOS setup program 2-7 2.3 Main menu 2-8 2.3.1 System Time 2-8 2.3.2 System Date 2-8 2.3.3 Language [English 2-8 2.3.4 SATA 1-6 2-8 2.3.5 Storage Configuration 2-9 2.3.6 System Information 2-10 2.4 Advanced menu 2-...17 2.6.2 Boot Settings Configuration 2-17 2.6.3 Security 2-18 2.7 Tools menu 2-19 2.7.1 AI NET 2 2-19 2.7.2 ASUS EZ Flash 2 2-19 2.7.3 IO Level up [Disabled 2-19 2.8 Exit menu 2-20 P7H55-M LX/USB3 motherboard installation notices 2-21 Intel® LGA1156 processor and chipset combination instruction... 2-21 Memory configuration 2-21 Configurations for ...
Contents 2.2 BIOS setup program 2-7 2.3 Main menu 2-8 2.3.1 System Time 2-8 2.3.2 System Date 2-8 2.3.3 Language [English 2-8 2.3.4 SATA 1-6 2-8 2.3.5 Storage Configuration 2-9 2.3.6 System Information 2-10 2.4 Advanced menu 2-...17 2.6.2 Boot Settings Configuration 2-17 2.6.3 Security 2-18 2.7 Tools menu 2-19 2.7.1 AI NET 2 2-19 2.7.2 ASUS EZ Flash 2 2-19 2.7.3 IO Level up [Disabled 2-19 2.8 Exit menu 2-20 P7H55-M LX/USB3 motherboard installation notices 2-21 Intel® LGA1156 processor and chipset combination instruction... 2-21 Memory configuration 2-21 Configurations for ...
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...any area where it may become wet. • Place the product on it supports. • Chapter 2: BIOS information This chapter tells how to change system settings through the BIOS Setup menus. vi These devices could interrupt the grounding circuit. • Ensure that your power supply is ...the power cables are not damaged. If you are using, contact your retailer. If you are not sure about the voltage of the BIOS parameters are also provided. Safety information Electrical safety • To prevent electric shock hazard, disconnect the power cable from the electric outlet...
...any area where it may become wet. • Place the product on it supports. • Chapter 2: BIOS information This chapter tells how to change system settings through the BIOS Setup menus. vi These devices could interrupt the grounding circuit. • Ensure that your power supply is ...the power cables are not damaged. If you are using, contact your retailer. If you are not sure about the voltage of the BIOS parameters are also provided. Safety information Electrical safety • To prevent electric shock hazard, disconnect the power cable from the electric outlet...
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... for Intel® CPU support list. resolution: 1920 x 1200 @60Hz - ASUS CrashFree BIOS 3 - Multi-language BIOS (continued on the next page) viii Supports Microsoft® DirectX 10 - ASUS AI NET 2 - Intel® H55 Express Chipset Dual-channel memory architecture 2 x DIMM, max. 8GB, DDR3 1333/1066... more, Windows® 32-bit operating system may only recognize less than 3GB. ASUS MyLogo 2 - P7H55-M LX/USB3 specifications summary CPU Chipset Memory Expansion slots VGA output Storage LAN Audio USB ASUS unique features LGA1156 socket for Intel® Core™ i7/ Core™ i5...
... for Intel® CPU support list. resolution: 1920 x 1200 @60Hz - ASUS CrashFree BIOS 3 - Multi-language BIOS (continued on the next page) viii Supports Microsoft® DirectX 10 - ASUS AI NET 2 - Intel® H55 Express Chipset Dual-channel memory architecture 2 x DIMM, max. 8GB, DDR3 1333/1066... more, Windows® 32-bit operating system may only recognize less than 3GB. ASUS MyLogo 2 - P7H55-M LX/USB3 specifications summary CPU Chipset Memory Expansion slots VGA output Storage LAN Audio USB ASUS unique features LGA1156 socket for Intel® Core™ i7/ Core™ i5...
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ix P7H55-M LX/ USB3 specifications summary Rear panel ports Internal connectors BIOS features Manageability Accessories Support DVD Form factor 1 x PS/2 Mouse port 1 x PS/2 Keyboard port 1 x D-Sub port 1 x DVI-D port 1 x LAN (RJ-45) port 2 x USB 2.0/1.1 ports 2 ... fan connector 1 x Front panel audio connector 1 x System panel connector 1 x S/PDIF Out connector 1 x COM connector 1 x Speaker connector 64 Mb Flash ROM, AMI BIOS, PnP, DMI v2.0, WfM 2.0, SM BIOS v2.5, ACPI v2.0a WOL, PXE, PME Wake up, WOR by Ring 2 x Serial ATA cables 1 x I/O shield 1 x User Manual 1 x Support DVD Drivers...
ix P7H55-M LX/ USB3 specifications summary Rear panel ports Internal connectors BIOS features Manageability Accessories Support DVD Form factor 1 x PS/2 Mouse port 1 x PS/2 Keyboard port 1 x D-Sub port 1 x DVI-D port 1 x LAN (RJ-45) port 2 x USB 2.0/1.1 ports 2 ... fan connector 1 x Front panel audio connector 1 x System panel connector 1 x S/PDIF Out connector 1 x COM connector 1 x Speaker connector 64 Mb Flash ROM, AMI BIOS, PnP, DMI v2.0, WfM 2.0, SM BIOS v2.5, ACPI v2.0a WOL, PXE, PME Wake up, WOR by Ring 2 x Serial ATA cables 1 x I/O shield 1 x User Manual 1 x Support DVD Drivers...
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...CPU_FAN, 3-pin CHA_FAN) 2. Intel® CPU socket 4. Onboard LED (SB_PWR) 1-11 Page 1-13 1-9 1-10 1-14 1-13 1-1 ASUS P7H55-M LX/USB3 1-2 The edge with external ports goes to the chassis. System panel connector (10-1 pin F_PANEL) Page Connectors/Jumpers/Slots/LED 1-11 ... VGA LGA1156 USB34 2 LAN1_USB12 CHA_FAN AUDIO ICS 9LRS954 Lithium Cell CMOS Power PCIEX16 RTL 8111E P7H55-M LX/USB3 SATA3G_1 Super I/O SB_PWR PCI1 PCI2 Intel® 64Mb BIOS 5 H55 SATA3G_2 SATA3G_5 SATA3G_3 PCIEX4_1 VIA VT1708S SPDIF_OUT COM USB1112 USB910 CLRTC USB78 USB56 SPEAKER ...
...CPU_FAN, 3-pin CHA_FAN) 2. Intel® CPU socket 4. Onboard LED (SB_PWR) 1-11 Page 1-13 1-9 1-10 1-14 1-13 1-1 ASUS P7H55-M LX/USB3 1-2 The edge with external ports goes to the chassis. System panel connector (10-1 pin F_PANEL) Page Connectors/Jumpers/Slots/LED 1-11 ... VGA LGA1156 USB34 2 LAN1_USB12 CHA_FAN AUDIO ICS 9LRS954 Lithium Cell CMOS Power PCIEX16 RTL 8111E P7H55-M LX/USB3 SATA3G_1 Super I/O SB_PWR PCI1 PCI2 Intel® 64Mb BIOS 5 H55 SATA3G_2 SATA3G_5 SATA3G_3 PCIEX4_1 VIA VT1708S SPDIF_OUT COM USB1112 USB910 CLRTC USB78 USB56 SPEAKER ...
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...26A DS KINGMAX KFC8FNMXF-BXX-15A DS ELPIDA J1108BDSE-DJ-F DS - - DS PSC A3P1GF3DGF928M9B05 SS SAMSUNG K4B1G0846F DS SAMSUNG K4B1G0846F DS Micron 0BF27D9KPT Timing DIMM (BIOS) 8-8-8-24 - 9-9-9-24 9-9-9-24 9 7-7-7-24 - 8-8-8-21 7-7-7-21 9-9-9-24 9-9-9-24 - 9 9 9 9-9-9-20 9-9-9-20 8-8-8-24 9-9-9-24 Voltage DIMM Support...•• 1.65V • • 1.5V •• - •• - •• 1.5V •• ASUS P7H55-M LX/USB3 1-4 Use a 64-bit Windows® OS if you install 4GB or more memory on the motherboard, the actual usable memory for the OS...
...26A DS KINGMAX KFC8FNMXF-BXX-15A DS ELPIDA J1108BDSE-DJ-F DS - - DS PSC A3P1GF3DGF928M9B05 SS SAMSUNG K4B1G0846F DS SAMSUNG K4B1G0846F DS Micron 0BF27D9KPT Timing DIMM (BIOS) 8-8-8-24 - 9-9-9-24 9-9-9-24 9 7-7-7-24 - 8-8-8-21 7-7-7-21 9-9-9-24 9-9-9-24 - 9 9 9 9-9-9-20 9-9-9-20 8-8-8-24 9-9-9-24 Voltage DIMM Support...•• 1.65V • • 1.5V •• - •• - •• 1.5V •• ASUS P7H55-M LX/USB3 1-4 Use a 64-bit Windows® OS if you install 4GB or more memory on the motherboard, the actual usable memory for the OS...
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Timing DIMM (BIOS) Voltage Crucial CT12864BA1067.8FF 1GB SS Micron 9GF22D9KPT 7 - Micron MT16JTF25664AZ-1G1F1 2GB DS Micron 9HF22D9KPT 7 - Single-sided / DS - DIMM Support A* B* • • • ... DS ELPIDA J1108BDSE-DJ-F 7 1.5V KINGSTON KVR1066D3N7/4G 4GB DS Hynix H5TQ2G83AFR 7 1.5V Micron MT8JTF12864AZ-1G1F1 1GB SS Micron 9GF22D9KPT 7 - Visit the ASUS website at www.asus.com for the latest QVL. 1-5 Chapter 1: Product introduction Double - OCZ OCZ3G1066LV4GK 4GB(2 x 2GB) DS Micron 9BF27D9KPV 7-7-7-20 1.65V SAMSUNG M378B2873EH1-CF8...
Timing DIMM (BIOS) Voltage Crucial CT12864BA1067.8FF 1GB SS Micron 9GF22D9KPT 7 - Micron MT16JTF25664AZ-1G1F1 2GB DS Micron 9HF22D9KPT 7 - Single-sided / DS - DIMM Support A* B* • • • ... DS ELPIDA J1108BDSE-DJ-F 7 1.5V KINGSTON KVR1066D3N7/4G 4GB DS Hynix H5TQ2G83AFR 7 1.5V Micron MT8JTF12864AZ-1G1F1 1GB SS Micron 9GF22D9KPT 7 - Visit the ASUS website at www.asus.com for the latest QVL. 1-5 Chapter 1: Product introduction Double - OCZ OCZ3G1066LV4GK 4GB(2 x 2GB) DS Micron 9BF27D9KPV 7-7-7-20 1.65V SAMSUNG M378B2873EH1-CF8...
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...your motherboard is completely seated on the system and change the necessary BIOS settings, if any. Remove the bracket opposite the slot that you intend to do not need to the chassis with the screw. 6. ASUS P7H55-M LX/USB3 1-6 Align the card connector with the PCI Express specifications. Turn ...on the slot. 5. When using PCI cards on BIOS setup. 2. 1.5 Expansion slots In the future, you may cause you physical injury...
...your motherboard is completely seated on the system and change the necessary BIOS settings, if any. Remove the bracket opposite the slot that you intend to do not need to the chassis with the screw. 6. ASUS P7H55-M LX/USB3 1-6 Align the card connector with the PCI Express specifications. Turn ...on the slot. 5. When using PCI cards on BIOS setup. 2. 1.5 Expansion slots In the future, you may cause you physical injury...
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..., then reboot the system, the BIOS automatically resets parameter settings to clear the Real Time Clock (RTC) RAM in CMOS, which include system setup information such as system passwords. P7H55-M LX/USB3 CLRTC 12 23 Normal (Default) Clear RTC P7H55-M LX/USB3 Clear RTC RAM To erase the RTC... RAM: 1. Shut down the key during the boot process and enter BIOS setup to pins 2-3. 1.6 Jumpers Clear RTC RAM (3-pin...
..., then reboot the system, the BIOS automatically resets parameter settings to clear the Real Time Clock (RTC) RAM in CMOS, which include system setup information such as system passwords. P7H55-M LX/USB3 CLRTC 12 23 Normal (Default) Clear RTC P7H55-M LX/USB3 Clear RTC RAM To erase the RTC... RAM: 1. Shut down the key during the boot process and enter BIOS setup to pins 2-3. 1.6 Jumpers Clear RTC RAM (3-pin...
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Connect one end of the front panel audio I /O module that the Front Panel Type item in the BIOS is set the item to this connector. See section 2.4.3 Onboard Devices Configuration for the chassis-mounted system warning speaker. Speaker connector (4-pin ...NC NC AAFP PIN 1 PIN 1 MIC2 MICPWR Line out_R NC Line out_L PORT1 L PORT1 R PORT2 R SENSE_SEND PORT2 L P7H55-M LX/USB3 HD-audio-compliant Legacy AC'97 pin definition compliant definition P7H55-M LX/USB3 front panel audio connector If you want to connect an AC97 front panel audio module to this connector, ensure that...
Connect one end of the front panel audio I /O module that the Front Panel Type item in the BIOS is set the item to this connector. See section 2.4.3 Onboard Devices Configuration for the chassis-mounted system warning speaker. Speaker connector (4-pin ...NC NC AAFP PIN 1 PIN 1 MIC2 MICPWR Line out_R NC Line out_L PORT1 L PORT1 R PORT2 R SENSE_SEND PORT2 L P7H55-M LX/USB3 HD-audio-compliant Legacy AC'97 pin definition compliant definition P7H55-M LX/USB3 front panel audio connector If you want to connect an AC97 front panel audio module to this connector, ensure that...
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... Copy the original motherboard BIOS using this utility. The Drivers menu appears. 2. Updating the BIOS To update the BIOS: 1. Follow the onscreen instructions to launch the ASUS Update utility. 2. From the Windows® desktop, click Start > Programs > ASUS > ASUS Update > ASUS Update to complete the ... or an Internet Service Provider (ISP). • This utility is available in the future. b. Select the ASUS FTP site nearest you to avoid network traffic, or click Auto Select then click Next. Installing ASUS Update To install ASUS Update: 1. ASUS P7H55-M LX/USB3 2-1
... Copy the original motherboard BIOS using this utility. The Drivers menu appears. 2. Updating the BIOS To update the BIOS: 1. Follow the onscreen instructions to launch the ASUS Update utility. 2. From the Windows® desktop, click Start > Programs > ASUS > ASUS Update > ASUS Update to complete the ... or an Internet Service Provider (ISP). • This utility is available in the future. b. Select the ASUS FTP site nearest you to avoid network traffic, or click Auto Select then click Next. Installing ASUS Update To install ASUS Update: 1. ASUS P7H55-M LX/USB3 2-1
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... found . Press to complete the updating process. 2.1.2 ASUS EZ Flash 2 The ASUS EZ Flash 2 feature allows you start using this utility, download the latest BIOS file from a file, then click Next. Locate the BIOS file from a BIOS file a. ASUSTek EZ Flash 2 BIOS ROM Utility V4.14 Current ROM BOARD: P7H55 M LX USB3 VER: 0205 (H:00 B:00) DATE: 10/29...
... found . Press to complete the updating process. 2.1.2 ASUS EZ Flash 2 The ASUS EZ Flash 2 feature allows you start using this utility, download the latest BIOS file from a file, then click Next. Locate the BIOS file from a BIOS file a. ASUSTek EZ Flash 2 BIOS ROM Utility V4.14 Current ROM BOARD: P7H55 M LX USB3 VER: 0205 (H:00 B:00) DATE: 10/29...
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... the computer and disconnect all SATA hard disk drives (optional). When the ASUS Logo appears, press to boot using defaults ASUS P7H55-M LX/USB3 2-3 The succeeding utility screens are for reference only. • This function supports USB flash disks with the latest BIOS file and BIOS Updater to the USB port. 2. Do not save them on the...
... the computer and disconnect all SATA hard disk drives (optional). When the ASUS Logo appears, press to boot using defaults ASUS P7H55-M LX/USB3 2-3 The succeeding utility screens are for reference only. • This function supports USB flash disks with the latest BIOS file and BIOS Updater to the USB port. 2. Do not save them on the...
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... Filename Extension The [filename] is done! ASUSTek BIOS Updater for DOS V1.00b [09/06/22] Current ROM BOARD: P7H55 M LX USB3 VER: 0205 DATE: 10/29/2010 Update ROM BOARD: Unknown VER: Unknown DATE: Unknown PATH: A:\ BIOS backup is any user-assigned filename with no more...(http://www.freedos.org)! C:\>d: D:\> Backing up the current BIOS To backup the current BIOS file using the BIOS Updater Ensure that the USB flash drive is done, press any key to continue. Note Saving BIOS: 2-4 Chapter 2: BIOS information When the Make Disk menu appears, select the FreeDOS command...
... Filename Extension The [filename] is done! ASUSTek BIOS Updater for DOS V1.00b [09/06/22] Current ROM BOARD: P7H55 M LX USB3 VER: 0205 DATE: 10/29/2010 Update ROM BOARD: Unknown VER: Unknown DATE: Unknown PATH: A:\ BIOS backup is any user-assigned filename with no more...(http://www.freedos.org)! C:\>d: D:\> Backing up the current BIOS To backup the current BIOS file using the BIOS Updater Ensure that the USB flash drive is done, press any key to continue. Note Saving BIOS: 2-4 Chapter 2: BIOS information When the Make Disk menu appears, select the FreeDOS command...
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... switch between screen fields and use the keys to ensure system compatibility and stability. Yes No 4. ASUS P7H55-M LX/USB3 2-5 DO NOT shut down or reset the system while updating the BIOS to prevent system boot failure! • For BIOS Updater version 1.04 or later, the utility automatically exits to the DOS prompt after updating the...
... switch between screen fields and use the keys to ensure system compatibility and stability. Yes No 4. ASUS P7H55-M LX/USB3 2-5 DO NOT shut down or reset the system while updating the BIOS to prevent system boot failure! • For BIOS Updater version 1.04 or later, the utility automatically exits to the DOS prompt after updating the...
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... and turn on the system. 2. You can cause system boot failure! Refer to restore the BIOS file when it fails or gets corrupted during the updating process. 2.1.4 ASUS CrashFree BIOS 3 ASUS CrashFree BIOS 3 is an auto recovery tool that allows you to section 2.8 Exit menu for the... BIOS file. Doing so can restore a corrupted BIOS file using the motherboard support DVD or a USB flash drive that contains the BIOS file. • Before using...
... and turn on the system. 2. You can cause system boot failure! Refer to restore the BIOS file when it fails or gets corrupted during the updating process. 2.1.4 ASUS CrashFree BIOS 3 ASUS CrashFree BIOS 3 is an auto recovery tool that allows you to section 2.8 Exit menu for the... BIOS file. Doing so can restore a corrupted BIOS file using the motherboard support DVD or a USB flash drive that contains the BIOS file. • Before using...
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... to turn the system off then back on your data or system. ASUS P7H55-M LX/USB3 2-7 Using the power button, reset button, or the ++ keys to force reset from the operating system. • The default BIOS settings for this motherboard apply for reference purposes only, and may not ...you in this motherboard. Entering BIOS Setup after POST To enter BIOS Setup after changing any BIOS settings, load the default settings to ensure system compatibility and stability. Entering BIOS Setup at startup To enter BIOS Setup at www.asus.com to download the latest BIOS file for this section are ...
... to turn the system off then back on your data or system. ASUS P7H55-M LX/USB3 2-7 Using the power button, reset button, or the ++ keys to force reset from the operating system. • The default BIOS settings for this motherboard apply for reference purposes only, and may not ...you in this motherboard. Entering BIOS Setup after POST To enter BIOS Setup after changing any BIOS settings, load the default settings to ensure system compatibility and stability. Entering BIOS Setup at startup To enter BIOS Setup at www.asus.com to download the latest BIOS file for this section are ...
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...field. Type [Auto] Selects the type of the appropriate SATA device type. Select [CDROM] if you are not user-configurable. Main Advanced P7H55-M LX/USB3 BIOS Setup Power Boot Tools Exit Version 0205 System Time [00:31:48] System Date [Tue 11/02/2010] Language [English] SATA 1 :[Not...SATA devices. Select Screen Select Item +- Configuration options Français] [Deutsch] [English] 2.3.4 SATA 1-6 While entering Setup, the BIOS automatically detects the presence of the basic system information. Select [ARMD] (ATAPI Removable Media Device) if your device is a separate sub...
...field. Type [Auto] Selects the type of the appropriate SATA device type. Select [CDROM] if you are not user-configurable. Main Advanced P7H55-M LX/USB3 BIOS Setup Power Boot Tools Exit Version 0205 System Time [00:31:48] System Date [Tue 11/02/2010] Language [English] SATA 1 :[Not...SATA devices. Select Screen Select Item +- Configuration options Français] [Deutsch] [English] 2.3.4 SATA 1-6 While entering Setup, the BIOS automatically detects the presence of the basic system information. Select [ARMD] (ATAPI Removable Media Device) if your device is a separate sub...
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.... Take caution when changing the settings of the general system specifications. The BIOS automatically detects the items in this menu. 2.3.6 System Information This menu gives you to malfunction. Main Advanced P7H55-M LX/USB3 BIOS Setup Power Boot Tools Exit CPU Configuration Chipset Onboard Devices Configuration USB Configuration PCIPnP Intel VT-d Configuration Version 0205 Adjust System...
.... Take caution when changing the settings of the general system specifications. The BIOS automatically detects the items in this menu. 2.3.6 System Information This menu gives you to malfunction. Main Advanced P7H55-M LX/USB3 BIOS Setup Power Boot Tools Exit CPU Configuration Chipset Onboard Devices Configuration USB Configuration PCIPnP Intel VT-d Configuration Version 0205 Adjust System...