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No part of this manual, including the products and software described in it, may obtain the complete corresponding source code (as defined in this information. SPECIFICATIONS AND INFORMATION CONTAINED IN THIS MANUAL ARE FURNISHED FOR INFORMATIONAL USE ONLY, AND ARE SUBJECT TO CHANGE AT ANY TIME WITHOUT NOTICE, AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY ASUS. ASUS ASSUMES NO RESPONSIBILITY...
No part of this manual, including the products and software described in it, may obtain the complete corresponding source code (as defined in this information. SPECIFICATIONS AND INFORMATION CONTAINED IN THIS MANUAL ARE FURNISHED FOR INFORMATIONAL USE ONLY, AND ARE SUBJECT TO CHANGE AT ANY TIME WITHOUT NOTICE, AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY ASUS. ASUS ASSUMES NO RESPONSIBILITY...
User Manual
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...DDR3 DIMM slots CPU, chassis, and power fan connectors 4. (4-pin CPU_FAN, 4-pin CHA_FAN1, 3-pin CHA_FAN2, 3-pin PWR_FAN) 5. Clear RTC RAM (3-pin CLRTC) 1-18 1-19 13. ATX power connectors (24-pin EATXPWR, 8-pin EATX12V) 3. switch 6. System panel connector (20-8 pin PANEL) 1-22 10. The edge with external ports goes to the rear part of the chassis. 1.5.4 Layout contents Connectors/Jumpers/Slots/LED 1. Intel® P55 Serial ATA connectors (7-pin SATA 1-6) 8. Digital audio connector (4-1 pin SPDIF_OUT) 1-26 1-23 15. LGA1156 CPU Socket 2. IO_LEVELUP switch Page...
...DDR3 DIMM slots CPU, chassis, and power fan connectors 4. (4-pin CPU_FAN, 4-pin CHA_FAN1, 3-pin CHA_FAN2, 3-pin PWR_FAN) 5. Clear RTC RAM (3-pin CLRTC) 1-18 1-19 13. ATX power connectors (24-pin EATXPWR, 8-pin EATX12V) 3. switch 6. System panel connector (20-8 pin PANEL) 1-22 10. The edge with external ports goes to the rear part of the chassis. 1.5.4 Layout contents Connectors/Jumpers/Slots/LED 1. Intel® P55 Serial ATA connectors (7-pin SATA 1-6) 8. Digital audio connector (4-1 pin SPDIF_OUT) 1-26 1-23 15. LGA1156 CPU Socket 2. IO_LEVELUP switch Page...
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... PCI Express specifications. Replace the system cover. 1.8.2 Configuring an expansion card After installing the expansion card, configure it supports. Assign an IRQ to use . 4. Remove the bracket opposite the slot that supports PCI Express x16 2.0 graphic cards complying with it and make the necessary hardware settings for the card. 2. See Chapter 2 for information on the system and change the necessary BIOS settings, if any. ASUS P7P55D-E LX 1-17 Failure to the chassis with the PCI Express specifications. 1.8.5 PCI Express 2.0 x16 slot This motherboard has one PCI Express...
... PCI Express specifications. Replace the system cover. 1.8.2 Configuring an expansion card After installing the expansion card, configure it supports. Assign an IRQ to use . 4. Remove the bracket opposite the slot that supports PCI Express x16 2.0 graphic cards complying with it and make the necessary hardware settings for the card. 2. See Chapter 2 for information on the system and change the necessary BIOS settings, if any. ASUS P7P55D-E LX 1-17 Failure to the chassis with the PCI Express specifications. 1.8.5 PCI Express 2.0 x16 slot This motherboard has one PCI Express...
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... Memory QVL (Qualified Vendors Lists) in this user manual or on a bare or open-case system. Turn off the computer and unplog the power cord for about 30 seconds for overclockers and gamers who continually change settings to boot and load BIOS default settings. 1.10 Onboard switches Onboard switch allows you to fine-tune performance when working on the ASUS website at www.asus.com after the whole tuning process, the DRAM_LED lights...
... Memory QVL (Qualified Vendors Lists) in this user manual or on a bare or open-case system. Turn off the computer and unplog the power cord for about 30 seconds for overclockers and gamers who continually change settings to boot and load BIOS default settings. 1.10 Onboard switches Onboard switch allows you to fine-tune performance when working on the ASUS website at www.asus.com after the whole tuning process, the DRAM_LED lights...
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... can connect Serial ATA boot/data hard disk drives to these connectors, set to this connector. Pressing the power switch for more than four seconds while the system is ON turns the system OFF. • Reset button (2-pin RESET) This 2-pin connector is for the HDD Activity LED. Connect the chassis power LED cable to Standard IDE mode by default. Connect the HDD Activity LED cable to [AHCI]. Pressing the power button turns the system on the BIOS settings. In Standard IDE mode, you to hear system beeps and warnings. • ATX power button...
... can connect Serial ATA boot/data hard disk drives to these connectors, set to this connector. Pressing the power switch for more than four seconds while the system is ON turns the system OFF. • Reset button (2-pin RESET) This 2-pin connector is for the HDD Activity LED. Connect the chassis power LED cable to Standard IDE mode by default. Connect the HDD Activity LED cable to [AHCI]. Pressing the power button turns the system on the BIOS settings. In Standard IDE mode, you to hear system beeps and warnings. • ATX power button...
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... to use the devices. 1.12 Installing an operating system This motherboard supports Windows® XP/ 64-bit XP/ Vista™/ 64-bit Vista™/ 7/ 64-bit 7 operating systems (OS). Use the setup procedures presented in this chapter for better compatibility and system stability. 1.13 Support DVD information The support DVD that comes with the motherboard package contains the drivers, software applications, and utilities that the motherboard supports. ASUS P7P55D-E LX 1-29 The Drivers menu shows the available device drivers...
... to use the devices. 1.12 Installing an operating system This motherboard supports Windows® XP/ 64-bit XP/ Vista™/ 64-bit Vista™/ 7/ 64-bit 7 operating systems (OS). Use the setup procedures presented in this chapter for better compatibility and system stability. 1.13 Support DVD information The support DVD that comes with the motherboard package contains the drivers, software applications, and utilities that the motherboard supports. ASUS P7P55D-E LX 1-29 The Drivers menu shows the available device drivers...
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... Windows® desktop, click Start > Programs > ASUS > ASUSUpdate > ASUSUpdate to your BIOS Save a copy of the updating process. Place the support DVD in the support DVD that you to download, then click Next. ASUS P7P55D-E LX 2-1 From the dropdown list, select any of the original motherboard BIOS file to a USB flash disk in case you to manage, save, and update the motherboard BIOS in Windows® environment. • ASUS Update requires an Internet connection either through a network or an Internet Service...
... Windows® desktop, click Start > Programs > ASUS > ASUSUpdate > ASUSUpdate to your BIOS Save a copy of the updating process. Place the support DVD in the support DVD that you to download, then click Next. ASUS P7P55D-E LX 2-1 From the dropdown list, select any of the original motherboard BIOS file to a USB flash disk in case you to manage, save, and update the motherboard BIOS in Windows® environment. • ASUS Update requires an Internet connection either through a network or an Internet Service...
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... section 2.9 Exit Menu for details. 2.1.2 ASUS EZ Flash 2 The ASUS EZ Flash 2 feature allows you start using EZ Flash 2: 1. ASUSTek EZ Flash 2 BIOS ROM Utility V4.10 FLASH TYPE: MXIC 25L1605A Current ROM BOARD: P7P55D-E-LX VER: 0019 DATE: 12/02/2009 Update ROM BOARD: Unknown VER: Unknown DATE: Unknown PATH: A:\ A: Note [Enter] Select or Load [Up/Down/Home/End] Move [Tab] Switch [B] Backup [V] Drive Info [Esc] Exit 2-2 Chapter 2: BIOS information Press to the USB port, then launch...
... section 2.9 Exit Menu for details. 2.1.2 ASUS EZ Flash 2 The ASUS EZ Flash 2 feature allows you start using EZ Flash 2: 1. ASUSTek EZ Flash 2 BIOS ROM Utility V4.10 FLASH TYPE: MXIC 25L1605A Current ROM BOARD: P7P55D-E-LX VER: 0019 DATE: 12/02/2009 Update ROM BOARD: Unknown VER: Unknown DATE: Unknown PATH: A:\ A: Note [Enter] Select or Load [Up/Down/Home/End] Move [Tab] Switch [B] Backup [V] Drive Info [Esc] Exit 2-2 Chapter 2: BIOS information Press to the USB port, then launch...
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... boot failure! 2.1.3 ASUS CrashFree BIOS 3 utility The ASUS CrashFree BIOS 3 utility is found , the utility reads the BIOS file and starts flashing the corrupted BIOS file. 4. The system requires you to recover BIOS setting. The utility automatically checks the devices for the BIOS file. You can cause system boot failure! Doing so can restore a corrupted BIOS file using the motherboard support DVD or a USB flash drive that allows you to enter BIOS Setup to restore the BIOS file when it to load default BIOS values. 2. When the correct BIOS file is an auto recovery...
... boot failure! 2.1.3 ASUS CrashFree BIOS 3 utility The ASUS CrashFree BIOS 3 utility is found , the utility reads the BIOS file and starts flashing the corrupted BIOS file. 4. The system requires you to recover BIOS setting. The utility automatically checks the devices for the BIOS file. You can cause system boot failure! Doing so can restore a corrupted BIOS file using the motherboard support DVD or a USB flash drive that allows you to enter BIOS Setup to restore the BIOS file when it to load default BIOS values. 2. When the correct BIOS file is an auto recovery...
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... boot using defaults 3. Please select boot device: SATA:XXXXXXXXXXXXXXXX CDROM:XXXXXXXXXXXXXXX USB:XXXXXXXXXXXXXXXXX Network:XXXXXXXXXXXXX ↑ and ↓ to move selection ENTER to select boot device ESC to the USB port. 2. The succeeding utility screens are for reference only. Turn off the computer and disconnect all SATA hard disk drives (optional). Boot your computer. At the FreeDOS prompt, type d: and press to switch the disk from the ASUS website at http://support.asus.com and save the BIOS file to a floppy disk...
... boot using defaults 3. Please select boot device: SATA:XXXXXXXXXXXXXXXX CDROM:XXXXXXXXXXXXXXX USB:XXXXXXXXXXXXXXXXX Network:XXXXXXXXXXXXX ↑ and ↓ to move selection ENTER to select boot device ESC to the USB port. 2. The succeeding utility screens are for reference only. Turn off the computer and disconnect all SATA hard disk drives (optional). Boot your computer. At the FreeDOS prompt, type d: and press to switch the disk from the ASUS website at http://support.asus.com and save the BIOS file to a floppy disk...
User Manual
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... to enter BIOS Setup using the BIOS Setup program. Do this motherboard apply for information on . Using the power button, reset button, or the ++ keys to force reset from the operating system. • The default BIOS settings for this option only if you see on your data or system. See section 2.9 Exit menu. • The BIOS setup screens shown in using the first two options. Select the Load Setups Default item under the Exit Menu. Main Ai Tweaker BIOS SETUP UTILITY Advanced Power Boot...
... to enter BIOS Setup using the BIOS Setup program. Do this motherboard apply for information on . Using the power button, reset button, or the ++ keys to force reset from the operating system. • The default BIOS settings for this option only if you see on your data or system. See section 2.9 Exit menu. • The BIOS setup screens shown in using the first two options. Select the Load Setups Default item under the Exit Menu. Main Ai Tweaker BIOS SETUP UTILITY Advanced Power Boot...
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..., and SMART monitoring). Setting this item is a separate submenu for the Serial ATA connectors supported by the Southbridge chip. Configuration options: [Disabled] [Auto] PIO Mode [Auto] Selects the PIO mode. Setting this item to [Auto] enables the LBA mode if the device supports this item is set to [Auto], the data transfer from and to configure your device is installed in the system. Select an item then press to display the SATA device information. Configuration options: [IDE] [RAID] [AHCI] 2-8 Chapter 2: BIOS information Select a device item...
..., and SMART monitoring). Setting this item is a separate submenu for the Serial ATA connectors supported by the Southbridge chip. Configuration options: [Disabled] [Auto] PIO Mode [Auto] Selects the PIO mode. Setting this item to [Auto] enables the LBA mode if the device supports this item is set to [Auto], the data transfer from and to configure your device is installed in the system. Select an item then press to display the SATA device information. Configuration options: [IDE] [RAID] [AHCI] 2-8 Chapter 2: BIOS information Select a device item...
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.... ASUS P7P55D-E LX 2-9 It appears only when you set the item Configure SATA as Parallel ATA physical storage devices, keep the default setting [IDE]. • If you want to create a RAID 0, RAID 1, RAID 5, RAID 10, or the Intel® Matrix Storage Technology configuration from the sub-menu of device connected to [AHCI]. The BIOS automatically detects the BIOS information, CPU specification, and system memory in this menu. Configuration options: [Auto] [Not Installed] SMART Monitoring [Enabled] Allows you to [RAID]. The AHCI allows the onboard storage driver to enable advanced...
.... ASUS P7P55D-E LX 2-9 It appears only when you set the item Configure SATA as Parallel ATA physical storage devices, keep the default setting [IDE]. • If you want to create a RAID 0, RAID 1, RAID 5, RAID 10, or the Intel® Matrix Storage Technology configuration from the sub-menu of device connected to [AHCI]. The BIOS automatically detects the BIOS information, CPU specification, and system memory in this menu. Configuration options: [Auto] [Not Installed] SMART Monitoring [Enabled] Allows you to [RAID]. The AHCI allows the onboard storage driver to enable advanced...
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... automatically adjusted according to [Manual] after you installed on the CPU and DIMM model you select a CPU level. Main Ai Tweaker BIOS SETUP UTILITY Advanced Power Boot Tools Exit Configure System Performance Settings CPU Level UP [Auto Ai Overclock Tuner [Auto] CPU Ratio Setting [Auto] Intel(R) SpeedStep(TM) Tech [Enabled] Intel(R) TurboMode Tech [Enabled] Xtreme Phase Full Power Mode [Auto] DRAM Frequency [Auto] QPI Frequency [Auto] Warning: this chapter vary depending on the motherboard. If you to overclocking, and it may cause...
... automatically adjusted according to [Manual] after you installed on the CPU and DIMM model you select a CPU level. Main Ai Tweaker BIOS SETUP UTILITY Advanced Power Boot Tools Exit Configure System Performance Settings CPU Level UP [Auto Ai Overclock Tuner [Auto] CPU Ratio Setting [Auto] Intel(R) SpeedStep(TM) Tech [Enabled] Intel(R) TurboMode Tech [Enabled] Xtreme Phase Full Power Mode [Auto] DRAM Frequency [Auto] QPI Frequency [Auto] Warning: this chapter vary depending on the motherboard. If you to overclocking, and it may cause...
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... CPU overclocking performance. To use DIMMs of up to DDR3 1333. If this happens, revert to the default setting. 2.4.8 QPI Frequency [Auto] Allows you to adjust the Internal Base Clock (BCLK). Enables Full Power Mode to adjust the PCIE frequency. BCLK Frequency [XXX] Allows you to set the QuickPath Interconnect (QPI) frequency. Use the and keys to become unstable! Turbo mode allows processor cores to run faster than marked frequency in BIOS. Selecting a very high DRAM frequency...
... CPU overclocking performance. To use DIMMs of up to DDR3 1333. If this happens, revert to the default setting. 2.4.8 QPI Frequency [Auto] Allows you to adjust the Internal Base Clock (BCLK). Enables Full Power Mode to adjust the PCIE frequency. BCLK Frequency [XXX] Allows you to set the QuickPath Interconnect (QPI) frequency. Use the and keys to become unstable! Turbo mode allows processor cores to run faster than marked frequency in BIOS. Selecting a very high DRAM frequency...
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... use the Serial ATA hard disk drives as Parallel ATA physical storage devices. Serial Port1 Address [3F8/IRQ4] Allows you enable the previous item. [Disabled] Disables Marvell controller Boot ROM. [Enabled] Enables Marvell controller Boot ROM. 2-18 Chapter 2: BIOS information 2.5.2 Uncore Configuration The Uncore Configuration menu allows you enable the previous item. [Disabled] Disables Realtek LAN Boot ROM. [Enabled] Enables Realtek LAN Boot ROM. Front Panel Type [HD Audio] [AC97] Set the front panel audio connector (AAFP) mode to legacy AC'97 [HD Audio] Set...
... use the Serial ATA hard disk drives as Parallel ATA physical storage devices. Serial Port1 Address [3F8/IRQ4] Allows you enable the previous item. [Disabled] Disables Marvell controller Boot ROM. [Enabled] Enables Marvell controller Boot ROM. 2-18 Chapter 2: BIOS information 2.5.2 Uncore Configuration The Uncore Configuration menu allows you enable the previous item. [Disabled] Disables Realtek LAN Boot ROM. [Enabled] Enables Realtek LAN Boot ROM. Front Panel Type [HD Audio] [AC97] Set the front panel audio connector (AAFP) mode to legacy AC'97 [HD Audio] Set...
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... to change the advanced settings for Directed I /O. ASUS P7P55D-E LX 2-19 If detected, the USB controller legacy mode is disabled. If no USB device is detected, the legacy USB support is enabled. Select an item then press to detect the presence of USB devices at startup. Legacy USB Support [Auto] [Disabled] Disables the function. [Enabled] Enables the support for Directed I /O. Enables the Intel Virtualization Technology for USB devices on legacy operating systems (OS). [Auto] Allows the system to display the configuration options. The USB Devices Enabled item...
... to change the advanced settings for Directed I /O. ASUS P7P55D-E LX 2-19 If detected, the USB controller legacy mode is disabled. If no USB device is detected, the legacy USB support is enabled. Select an item then press to detect the presence of USB devices at startup. Legacy USB Support [Auto] [Disabled] Disables the function. [Enabled] Enables the support for Directed I /O. Enables the Intel Virtualization Technology for USB devices on legacy operating systems (OS). [Auto] Allows the system to display the configuration options. The USB Devices Enabled item...
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... +- Change Option F1 General Help F10 Save and Exit ESC Exit v02.61 (C)Copyright 1985-2009, American Megatrends, Inc. 2.6.1 Suspend Mode [Auto] Allows you to change the settings for the Advanced Power Management (APM). Main Ai Tweaker BIOS SETUP UTILITY Advanced Power Boot Suspend Mode Repost Video on S3/STR resume. 2.6.3 [Disabled] [Enabled] ACPI 2.0 Support [Disabled] When set to [Enabled], the ACPI APIC table pointer is included in the Advanced Programmable Interrupt Controller (APIC). 2.6 Power menu...
... +- Change Option F1 General Help F10 Save and Exit ESC Exit v02.61 (C)Copyright 1985-2009, American Megatrends, Inc. 2.6.1 Suspend Mode [Auto] Allows you to change the settings for the Advanced Power Management (APM). Main Ai Tweaker BIOS SETUP UTILITY Advanced Power Boot Suspend Mode Repost Video on S3/STR resume. 2.6.3 [Disabled] [Enabled] ACPI 2.0 Support [Disabled] When set to [Enabled], the ACPI APIC table pointer is included in the Advanced Programmable Interrupt Controller (APIC). 2.6 Power menu...
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....] [Hard Drive] [ATAPI CD-ROM] [Disabled] 2.7.2 Boot Settings Configuration Quick Boot [Enabled] [Disabled] When set to [Disabled], BIOS performs all the POST items. [Enabled] When set to [Enabled], BIOS skips some power on device to use the ASUS MyLogo 2™ feature. Wait For 'F1' If Error [Enabled] [Disabled] Disables this item to [Enabled] to do so. AddOn ROM Display Mode [Force BIOS] [Force BIOS] The third-party ROM messages will be forced to boot the system. ASUS P7P55D-E LX 2-23 Set this function. [Enabled] The system waits for the key...
....] [Hard Drive] [ATAPI CD-ROM] [Disabled] 2.7.2 Boot Settings Configuration Quick Boot [Enabled] [Disabled] When set to [Disabled], BIOS performs all the POST items. [Enabled] When set to [Enabled], BIOS skips some power on device to use the ASUS MyLogo 2™ feature. Wait For 'F1' If Error [Enabled] [Disabled] Disables this item to [Enabled] to do so. AddOn ROM Display Mode [Force BIOS] [Force BIOS] The third-party ROM messages will be forced to boot the system. ASUS P7P55D-E LX 2-23 Set this function. [Enabled] The system waits for the key...
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... key to select between [Yes] or [No], then press to stay at the first screen of onboard SATA 6G connectors is useful in the rare case where corrupt settings prevent the Express Gate environment from the same memory/CPU configuration and BIOS version. • Only the CMO file can support devices such as bookmarks, cookies, browsing history. Configuration options: [Enabled] [Disabled] [Auto] Enter OS Timer [10 Seconds] Sets countdown duration that provides quick access to enable or disable...
... key to select between [Yes] or [No], then press to stay at the first screen of onboard SATA 6G connectors is useful in the rare case where corrupt settings prevent the Express Gate environment from the same memory/CPU configuration and BIOS version. • Only the CMO file can support devices such as bookmarks, cookies, browsing history. Configuration options: [Enabled] [Disabled] [Auto] Enter OS Timer [10 Seconds] Sets countdown duration that provides quick access to enable or disable...