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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 Processing Unit (CPU 1-3 1.4 System memory...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 Processing Unit (CPU 1-3 1.4 System memory...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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... 2.6 Boot menu 2-17 2.6.1 Boot Device Priority 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 the PCI...
... 2.6 Boot menu 2-17 2.6.1 Boot Device Priority 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 the PCI...
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... system may only recognize less than 3GB. Supports Microsoft® DirectX 10 - ASUS AI NET 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...back panel) 10 x USB 2.0/1.1 ports (8 ports at the mid-board, 2 ports at the back panel) ASUS Anti-Surge ASUS GPU Boost ASUS EZ DIY - D-Sub with Max. ASUS EZ Flash 2 - ASUS MyLogo 2 - ASUS CrashFree BIOS 3 - resolution: 1920 x 1200 @60Hz - Multi-language BIOS (continued on the next page) ...
... system may only recognize less than 3GB. Supports Microsoft® DirectX 10 - ASUS AI NET 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...back panel) 10 x USB 2.0/1.1 ports (8 ports at the mid-board, 2 ports at the back panel) ASUS Anti-Surge ASUS GPU Boost ASUS EZ DIY - D-Sub with Max. ASUS EZ Flash 2 - ASUS MyLogo 2 - ASUS CrashFree BIOS 3 - resolution: 1920 x 1200 @60Hz - Multi-language BIOS (continued on the next page) ...
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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 ... 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 ASUS Utilities ASUS Update Anti-virus software (OEM version) uATX form factor: 9.6 in x 7.8 in (24.4 cm x 19.8 cm) * Specifications are subject to change without notice.
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 ... 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 ASUS Utilities ASUS Update Anti-virus software (OEM version) uATX form factor: 9.6 in x 7.8 in (24.4 cm x 19.8 cm) * Specifications are subject to change without notice.
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... a standby power LED that lights up to page ix for buying an ASUS® P7H55-M LX/USB3 motherboard! Onboard LED This motherboard comes with the component. • Before you install or remove any motherboard component. SB_PWR P7H55-M LX/USB3 ON OFF Standby Power Powered Off P7H55-M LX/USB3 Onboard LED 1-1 Chapter 1: Product introduction Before you start installing the motherboard, and...
... a standby power LED that lights up to page ix for buying an ASUS® P7H55-M LX/USB3 motherboard! Onboard LED This motherboard comes with the component. • Before you install or remove any motherboard component. SB_PWR P7H55-M LX/USB3 ON OFF Standby Power Powered Off P7H55-M LX/USB3 Onboard LED 1-1 Chapter 1: Product introduction Before you start installing the motherboard, and...
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...) 7. Front panel audio connector (10-1 pin AAFP) 1-7 13. 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 System panel connector (10-1 pin F_PANEL) Page Connectors/Jumpers/Slots/LED 1-11 8. Speaker connector (4-pin SPEAKER) 1-12 9. 1.2 1.2.1 Motherboard overview... 24.4cm(9.6in) 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 ...
...) 7. Front panel audio connector (10-1 pin AAFP) 1-7 13. 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 System panel connector (10-1 pin F_PANEL) Page Connectors/Jumpers/Slots/LED 1-11 8. Speaker connector (4-pin SPEAKER) 1-12 9. 1.2 1.2.1 Motherboard overview... 24.4cm(9.6in) 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 ...
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...on the LGA1156 socket. • The product warranty does not cover damage to the PnP cap/socket contacts/motherboard components. ASUS will shoulder the cost of the motherboard, ensure that the PnP cap is shipment/transit-related. • Keep the cap ...resulting from incorrect CPU installation/removal, or misplacement/loss/incorrect removal of the DDR3 DIMM sockets: P7H55-M LX/USB3 P7H55-M LX/USB3 240-pin DDR3 DIMM sockets DIMM_A1 DIMM_B1 1-3 Chapter 1: Product introduction ASUS will process Return Merchandise Authorization (RMA) requests only if the motherboard comes with the cap on...
...on the LGA1156 socket. • The product warranty does not cover damage to the PnP cap/socket contacts/motherboard components. ASUS will shoulder the cost of the motherboard, ensure that the PnP cap is shipment/transit-related. • Keep the cap ...resulting from incorrect CPU installation/removal, or misplacement/loss/incorrect removal of the DDR3 DIMM sockets: P7H55-M LX/USB3 P7H55-M LX/USB3 240-pin DDR3 DIMM sockets DIMM_A1 DIMM_B1 1-3 Chapter 1: Product introduction ASUS will process Return Merchandise Authorization (RMA) requests only if the motherboard comes with the cap on...
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...4GB(2 x 2GB) 1GB 4GB(2 x 2GB) 6GB(3 x 2GB) 2GB 1GB 2GB 6GB(3x 2GB) SS/ DS Chip Brand Chip No. P7H55-M LX/USB3 Series Motherboard Qualified Vendors List (QVL) DDR3-1333MHz capability Vendor Part No. DS - - Use a 64-bit Windows® OS if you... •• 1.7V •• 1.65V • • 1.5V •• - •• - •• 1.5V •• ASUS P7H55-M LX/USB3 1-4 For optimum compatibility, it is then mapped for single-channel operation. • Always install DIMMs with the same CAS latency. Use a maximum of 3GB system...
...4GB(2 x 2GB) 1GB 4GB(2 x 2GB) 6GB(3 x 2GB) 2GB 1GB 2GB 6GB(3x 2GB) SS/ DS Chip Brand Chip No. P7H55-M LX/USB3 Series Motherboard Qualified Vendors List (QVL) DDR3-1333MHz capability Vendor Part No. DS - - Use a 64-bit Windows® OS if you... •• 1.7V •• 1.65V • • 1.5V •• - •• - •• 1.5V •• ASUS P7H55-M LX/USB3 1-4 For optimum compatibility, it is then mapped for single-channel operation. • Always install DIMMs with the same CAS latency. Use a maximum of 3GB system...
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... slot This motherboard supports PCI Express x16 graphics cards that comes with the slot and press firmly until the card is already installed in a chassis). 3. ASUS P7H55-M LX/USB3 1-6 Failure to do not need to use. 4. The following sub-sections describe the slots and the expansion cards that the cards do so may need...
... slot This motherboard supports PCI Express x16 graphics cards that comes with the slot and press firmly until the card is already installed in a chassis). 3. ASUS P7H55-M LX/USB3 1-6 Failure to do not need to use. 4. The following sub-sections describe the slots and the expansion cards that the cards do so may need...
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... remove the cap on pins 2-3 for about 5-10 seconds, then move the jumper again to clear the CMOS RTC RAM data. P7H55-M LX/USB3 CLRTC 12 23 Normal (Default) Clear RTC P7H55-M LX/USB3 Clear RTC RAM To erase the RTC RAM: 1. You can clear the CMOS memory of date, time, and system setup parameters by...
... remove the cap on pins 2-3 for about 5-10 seconds, then move the jumper again to clear the CMOS RTC RAM data. P7H55-M LX/USB3 CLRTC 12 23 Normal (Default) Clear RTC P7H55-M LX/USB3 Clear RTC RAM To erase the RTC RAM: 1. You can clear the CMOS memory of date, time, and system setup parameters by...
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... blue). This port connects to a Local Area Network (LAN) through a network hub. PS/2 Mouse port. This port is for a PS/2 mouse. 2. LAN (RJ-45) port. ASUS P7H55-M LX/USB3 1-8 Video Graphics Adapter (VGA) port. Line Out port (lime). 1.7 1.7.1 1 Connectors Rear panel ports 2 3 45 10 9 8 7 6 1. Refer to the audio configuration table below for the function...
... blue). This port connects to a Local Area Network (LAN) through a network hub. PS/2 Mouse port. This port is for a PS/2 mouse. 2. LAN (RJ-45) port. ASUS P7H55-M LX/USB3 1-8 Video Graphics Adapter (VGA) port. Line Out port (lime). 1.7 1.7.1 1 Connectors Rear panel ports 2 3 45 10 9 8 7 6 1. Refer to the audio configuration table below for the function...
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... NC USB+5V USB_P8USB_P8+ GND NC USB+5V USB_P6USB_P6+ GND NC USB1112 USB910 USB78 USB56 P7H55-M LX/USB3 PIN 1 PIN 1 PIN 1 PIN 1 USB+5V USB_P11USB_P11+ GND USB+5V USB_P9USB_P9+ GND USB+5V USB_P7USB_P7+ GND USB+5V USB_P5USB_P5+ GND P7H55-M LX/USB3 USB2.0 connectors Never connect a 1394 cable to USB 2.0/1.1 devices. 8. These two 9-pin Universal Serial Bus...
... NC USB+5V USB_P8USB_P8+ GND NC USB+5V USB_P6USB_P6+ GND NC USB1112 USB910 USB78 USB56 P7H55-M LX/USB3 PIN 1 PIN 1 PIN 1 PIN 1 USB+5V USB_P11USB_P11+ GND USB+5V USB_P9USB_P9+ GND USB+5V USB_P7USB_P7+ GND USB+5V USB_P5USB_P5+ GND P7H55-M LX/USB3 USB2.0 connectors Never connect a 1394 cable to USB 2.0/1.1 devices. 8. These two 9-pin Universal Serial Bus...
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...Serial ATA 3Gb/s hard disk and optical disk drives. The data transfer rate of the Serial ATA 3Gb/s is purchased separately. ASUS P7H55-M LX/USB3 1-10 Serial ATA connectors (7-pin SATA1-6) These connectors are for the Serial ATA signal cables for an additional Sony/Philips Digital... Interface (S/PDIF) port. +5V SPDIFOUT GND P7H55-M LX/USB3 SPDIF_OUT P7H55-M LX/USB3 Digital audio connector The S/PDIF module is faster than the standard parallel ATA with Serial ATA 1.5Gb/s specification. The Serial...
...Serial ATA 3Gb/s hard disk and optical disk drives. The data transfer rate of the Serial ATA 3Gb/s is purchased separately. ASUS P7H55-M LX/USB3 1-10 Serial ATA connectors (7-pin SATA1-6) These connectors are for the Serial ATA signal cables for an additional Sony/Philips Digital... Interface (S/PDIF) port. +5V SPDIFOUT GND P7H55-M LX/USB3 SPDIF_OUT P7H55-M LX/USB3 Digital audio connector The S/PDIF module is faster than the standard parallel ATA with Serial ATA 1.5Gb/s specification. The Serial...
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PWR LED PWR BTN PLED+ PLEDPWR GND IDE_LED+ IDE_LED- Ground Reset P7H55-M LX/USB3 F_PANEL PIN 1 HD_LED RESET P7H55-M LX/USB3 System panel connector • System power LED (2-pin PLED) This 2-pin connector is for system reboot without turning off button (2-pin ...; Power/Soft-off the system power. 1-11 Chapter 1: Product introduction CPU_FAN CPU FAN PWM CPU FAN IN CPU FAN PWR GND P7H55-M LX/USB3 CHA_FAN GND +12V Rotation P7H55-M LX/USB3 fan connectors 5. Connect the HDD Activity LED cable to the fan connectors on the fan connectors. System panel connector (10-1 pin ...
PWR LED PWR BTN PLED+ PLEDPWR GND IDE_LED+ IDE_LED- Ground Reset P7H55-M LX/USB3 F_PANEL PIN 1 HD_LED RESET P7H55-M LX/USB3 System panel connector • System power LED (2-pin PLED) This 2-pin connector is for system reboot without turning off button (2-pin ...; Power/Soft-off the system power. 1-11 Chapter 1: Product introduction CPU_FAN CPU FAN PWM CPU FAN IN CPU FAN PWR GND P7H55-M LX/USB3 CHA_FAN GND +12V Rotation P7H55-M LX/USB3 fan connectors 5. Connect the HDD Activity LED cable to the fan connectors on the fan connectors. System panel connector (10-1 pin ...
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... a system with 20-pin and 4-pin power plugs, make sure that the 20-pin power plug can provide at http://support.asus. ASUS P7H55-M LX/USB3 1-12 6. ATX12V EATXPWR +12V DC +12V DC P7H55-M LX/USB3 GND GND +3 Volts +12 Volts +12 Volts +5V Standby Power OK PIN 1 GND +5 Volts GND +5 Volts GND +3... Volts +3 Volts PIN 1 P7H55-M LX/USB3 ATX power connectors GND +5 Volts +5 Volts +5 Volts -5 Volts GND GND GND PSON# GND -12 Volts +3 Volts • We recommend that you...
... a system with 20-pin and 4-pin power plugs, make sure that the 20-pin power plug can provide at http://support.asus. ASUS P7H55-M LX/USB3 1-12 6. ATX12V EATXPWR +12V DC +12V DC P7H55-M LX/USB3 GND GND +3 Volts +12 Volts +12 Volts +5V Standby Power OK PIN 1 GND +5 Volts GND +5 Volts GND +3... Volts +3 Volts PIN 1 P7H55-M LX/USB3 ATX power connectors GND +5 Volts +5 Volts +5 Volts -5 Volts GND GND GND PSON# GND -12 Volts +3 Volts • We recommend that you...
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...a chassis-mounted front panel audio I /O module cable to hear system beeps and warnings. +5V GND GND Speaker Out SPEAKER P7H55-M LX/USB3 PIN 1 P7H55-M LX/USB3 Speaker Out Connector 1-13 Chapter 1: Product introduction GND PRESENCE# SENSE1_RETUR SENSE2_RETUR AGND NC 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 ...
...a chassis-mounted front panel audio I /O module cable to hear system beeps and warnings. +5V GND GND Speaker Out SPEAKER P7H55-M LX/USB3 PIN 1 P7H55-M LX/USB3 Speaker Out Connector 1-13 Chapter 1: Product introduction GND PRESENCE# SENSE1_RETUR SENSE2_RETUR AGND NC 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 ...
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9. The serial port bracket (COM1) is for a serial (COM) port. COM1 PIN 1 P7H55-M LX/USB3 P7H55-M LX/USB3 Serial port (COM1) connector ASUS P7H55-M LX/USB3 1-14 Serial port connectors (10-1 pin COM1) The connector is purchased separately. Connect the serial port module cable to the connector, then install the module to a slot opening at the back of the system chassis.
9. The serial port bracket (COM1) is for a serial (COM) port. COM1 PIN 1 P7H55-M LX/USB3 P7H55-M LX/USB3 Serial port (COM1) connector ASUS P7H55-M LX/USB3 1-14 Serial port connectors (10-1 pin COM1) The connector is purchased separately. Connect the serial port module cable to the connector, then install the module to a slot opening at the back of the system chassis.
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... to avoid network traffic, or click Auto Select then click Next. From the Windows® desktop, click Start > Programs > ASUS > ASUS Update > ASUS Update to complete the installation. From the FTP site, select the BIOS version that comes with the motherboard package. Place the support...an Internet connection either of the original motherboard BIOS file to a USB flash disk in case you want to download then click Next. ASUS P7H55-M LX/USB3 2-1 Copy the original motherboard BIOS using this utility. Chapter 2 BIOS information 2.1 Managing and updating your BIOS Save a copy of ...
... to avoid network traffic, or click Auto Select then click Next. From the Windows® desktop, click Start > Programs > ASUS > ASUS Update > ASUS Update to complete the installation. From the FTP site, select the BIOS version that comes with the motherboard package. Place the support...an Internet connection either of the original motherboard BIOS file to a USB flash disk in case you want to download then click Next. ASUS P7H55-M LX/USB3 2-1 Copy the original motherboard BIOS using this utility. Chapter 2 BIOS information 2.1 Managing and updating your BIOS Save a copy of ...
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..., then launch EZ Flash 2 in either of updating itself through the Internet. ASUSTek EZ Flash 2 BIOS ROM Utility V4.14 Current ROM BOARD: P7H55 M LX USB3 VER: 0205 (H:00 B:00) DATE: 10/29/2010 Update ROM BOARD: Unknown VER: Unknown DATE: Unknown PATH: A:\ A: Note [Enter] ...] Switch [B] Backup [V] Drive Info [ESC] Exit 2. Updating from the ASUS website at www.asus.com. Insert the USB flash disk that contains the latest BIOS file to complete the updating process. 2.1.2 ASUS EZ Flash 2 The ASUS EZ Flash 2 feature allows you start using EZ Flash 2: 1. When the...
..., then launch EZ Flash 2 in either of updating itself through the Internet. ASUSTek EZ Flash 2 BIOS ROM Utility V4.14 Current ROM BOARD: P7H55 M LX USB3 VER: 0205 (H:00 B:00) DATE: 10/29/2010 Update ROM BOARD: Unknown VER: Unknown DATE: Unknown PATH: A:\ A: Note [Enter] ...] Switch [B] Backup [V] Drive Info [ESC] Exit 2. Updating from the ASUS website at www.asus.com. Insert the USB flash disk that contains the latest BIOS file to complete the updating process. 2.1.2 ASUS EZ Flash 2 The ASUS EZ Flash 2 feature allows you start using EZ Flash 2: 1. When the...