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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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... PCIe controller VIA® VT1708S 8-channel* High Definition Audio CODEC * Use a chassis with Max. DVI-D with Max. ASUS MyLogo 2 - ASUS CrashFree BIOS 3 - 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/ Core™ i3/ Pentium...
... PCIe controller VIA® VT1708S 8-channel* High Definition Audio CODEC * Use a chassis with Max. DVI-D with Max. ASUS MyLogo 2 - ASUS CrashFree BIOS 3 - 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/ Core™ i3/ Pentium...
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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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... grounded wrist strap or touch a safely grounded object or a metal object, such as the power supply case, to page ix for buying an ASUS® P7H55-M LX/USB3 motherboard! Failure to do so may cause severe damage to indicate that the system is ON, in sleep mode, or in any motherboard component. Refer...that came with a standby power LED that lights up to the motherboard, peripherals, or components. The illustration below shows the location of accessories. SB_PWR P7H55-M LX/USB3 ON OFF Standby Power Powered Off P7H55-M LX/USB3 Onboard LED 1-1 Chapter 1: Product introduction
... grounded wrist strap or touch a safely grounded object or a metal object, such as the power supply case, to page ix for buying an ASUS® P7H55-M LX/USB3 motherboard! Failure to do so may cause severe damage to indicate that the system is ON, in sleep mode, or in any motherboard component. Refer...that came with a standby power LED that lights up to the motherboard, peripherals, or components. The illustration below shows the location of accessories. SB_PWR P7H55-M LX/USB3 ON OFF Standby Power Powered Off P7H55-M LX/USB3 Onboard LED 1-1 Chapter 1: Product introduction
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... SPDIF_OUT) 1-3 11. Serial port connectors (10-1 pin COM1) 1-10 12. 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 Clear RTC RAM (3-pin CLRTC) 7. USB connectors (10-1 pin USB56, USB78, USB910, USB1112) 10. Front panel audio connector (10-1 pin AAFP) ... EATXPWR 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 COM ...
... SPDIF_OUT) 1-3 11. Serial port connectors (10-1 pin COM1) 1-10 12. 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 Clear RTC RAM (3-pin CLRTC) 7. USB connectors (10-1 pin USB56, USB78, USB910, USB1112) 10. Front panel audio connector (10-1 pin AAFP) ... EATXPWR 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 COM ...
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...i3 / Pentium® processors. Contact your retailer immediately if the PnP cap is shipment/transit-related. • Keep the cap after installing the motherboard. ASUS will process Return Merchandise Authorization (RMA) requests only if the motherboard comes with two Double Data Rate 3 (DDR3) Dual Inline Memory Module (DIMM) ... differently to the socket contacts 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
...i3 / Pentium® processors. Contact your retailer immediately if the PnP cap is shipment/transit-related. • Keep the cap after installing the motherboard. ASUS will process Return Merchandise Authorization (RMA) requests only if the motherboard comes with two Double Data Rate 3 (DDR3) Dual Inline Memory Module (DIMM) ... differently to the socket contacts 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
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...; • - •• 1.7V •• 1.65V • • 1.5V •• - •• - •• 1.5V •• ASUS P7H55-M LX/USB3 1-4 Use a 64-bit Windows® OS if you obtain memory modules from the higher-sized channel is recommended that you do either of 3GB system... limitation on the 32-bit Windows® OS, when you are using a 32-bit Windows® OS. - DS - - P7H55-M LX/USB3 Series Motherboard Qualified Vendors List (QVL) DDR3-1333MHz capability Vendor Part No. DS DS APACER SS SS SS Micron DS SS ELPIDA AM5D5808DEWSBG...
...; • - •• 1.7V •• 1.65V • • 1.5V •• - •• - •• 1.5V •• ASUS P7H55-M LX/USB3 1-4 Use a 64-bit Windows® OS if you obtain memory modules from the higher-sized channel is recommended that you do either of 3GB system... limitation on the 32-bit Windows® OS, when you are using a 32-bit Windows® OS. - DS - - P7H55-M LX/USB3 Series Motherboard Qualified Vendors List (QVL) DDR3-1333MHz capability Vendor Part No. DS DS APACER SS SS SS Micron DS SS ELPIDA AM5D5808DEWSBG...
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... IRQ assignments; Install the software drivers for information on the system and change the necessary BIOS settings, if any. See Chapter 2 for the expansion card. ASUS P7H55-M LX/USB3 1-6
... IRQ assignments; Install the software drivers for information on the system and change the necessary BIOS settings, if any. See Chapter 2 for the expansion card. ASUS P7H55-M LX/USB3 1-6
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The onboard button cell battery powers the RAM data in CMOS. P7H55-M LX/USB3 CLRTC 12 23 Normal (Default) Clear RTC P7H55-M LX/USB3 Clear RTC RAM To erase the RTC RAM: 1. Except when clearing the RTC RAM, never remove the cap on pins 2-3 for about 5-10 seconds, then ...
The onboard button cell battery powers the RAM data in CMOS. P7H55-M LX/USB3 CLRTC 12 23 Normal (Default) Clear RTC P7H55-M LX/USB3 Clear RTC RAM To erase the RTC RAM: 1. Except when clearing the RTC RAM, never remove the cap on pins 2-3 for about 5-10 seconds, then ...
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... for the function of this port becomes Front Speaker Out. 6. This port allows Gigabit connection to the table below for the LAN port LED indicators. ASUS P7H55-M LX/USB3 1-8 Video Graphics Adapter (VGA) port. LAN port LED indications ACT/LINK LED Status Description OFF No link ORANGE Linked BLINKING Data activity SPEED LED Status...
... for the function of this port becomes Front Speaker Out. 6. This port allows Gigabit connection to the table below for the LAN port LED indicators. ASUS P7H55-M LX/USB3 1-8 Video Graphics Adapter (VGA) port. LAN port LED indications ACT/LINK LED Status Description OFF No link ORANGE Linked BLINKING Data activity SPEED LED Status...
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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. Connect the USB module cable to...
... 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. Connect the USB module cable to...
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... RSATA_RXN6 RSATA_RXP6 GND RSATA_TXN6 RSATA_TXP6 GND GND RSATA_RXN4 RSATA_RXP4 GND RSATA_TXN4 RSATA_TXP4 GND P7H55-M LX/USB3 SATA3G_6 SATA3G_4 P7H55-M LX/USB3 SATA connectors Install the Windows® XP Service Pack 2 or later version before using Serial ATA. 3. 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...
... RSATA_RXN6 RSATA_RXP6 GND RSATA_TXN6 RSATA_TXP6 GND GND RSATA_RXN4 RSATA_RXP4 GND RSATA_TXN4 RSATA_TXP4 GND P7H55-M LX/USB3 SATA3G_6 SATA3G_4 P7H55-M LX/USB3 SATA connectors Install the Windows® XP Service Pack 2 or later version before using Serial ATA. 3. 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...
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... inside the system may damage the motherboard components. 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. System panel connector (10-1 pin F_PANEL) This connector supports several chassis-mounted functions. The IDE...8226; Hard disk drive activity LED (2-pin +HDLED) This 2-pin connector is for the HDD Activity 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...
... inside the system may damage the motherboard components. 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. System panel connector (10-1 pin F_PANEL) This connector supports several chassis-mounted functions. The IDE...8226; Hard disk drive activity LED (2-pin +HDLED) This 2-pin connector is for the HDD Activity 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...
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Find the proper orientation and push down firmly until the connectors completely fit. ASUS P7H55-M LX/USB3 1-12 The system may become unstable or may not boot up . • We recommend that you use an ATX 12V Specification 2.0‑compliant... output when configuring a system with a minimum of 300 W. 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 ...
Find the proper orientation and push down firmly until the connectors completely fit. ASUS P7H55-M LX/USB3 1-12 The system may become unstable or may not boot up . • We recommend that you use an ATX 12V Specification 2.0‑compliant... output when configuring a system with a minimum of 300 W. 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 ...
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... 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 ... 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 See section 2.4.3 Onboard Devices Configuration for the chassis-mounted system warning speaker....
... 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 ... 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 See section 2.4.3 Onboard Devices Configuration for the chassis-mounted system warning speaker....
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9. Connect the serial port module cable to the connector, then install the module to a slot opening at the back of the system chassis. COM1 PIN 1 P7H55-M LX/USB3 P7H55-M LX/USB3 Serial port (COM1) connector ASUS P7H55-M LX/USB3 1-14 The serial port bracket (COM1) is for a serial (COM) port. Serial port connectors (10-1 pin COM1) The connector is purchased separately.
9. Connect the serial port module cable to the connector, then install the module to a slot opening at the back of the system chassis. COM1 PIN 1 P7H55-M LX/USB3 P7H55-M LX/USB3 Serial port (COM1) connector ASUS P7H55-M LX/USB3 1-14 The serial port bracket (COM1) is for a serial (COM) port. Serial port connectors (10-1 pin COM1) The connector is purchased separately.
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... update the BIOS: 1. b. Installing ASUS Update To install ASUS Update: 1. From the Windows® desktop, click Start > Programs > ASUS > ASUS Update > ASUS Update to complete the installation. Follow the onscreen instructions to launch the ASUS Update utility. 2. From the FTP site, select the BIOS version that comes with the motherboard package. ASUS P7H55-M LX/USB3 2-1 From the dropdown list, select...
... update the BIOS: 1. b. Installing ASUS Update To install ASUS Update: 1. From the Windows® desktop, click Start > Programs > ASUS > ASUS Update > ASUS Update to complete the installation. Follow the onscreen instructions to launch the ASUS Update utility. 2. From the FTP site, select the BIOS version that comes with the motherboard package. ASUS P7H55-M LX/USB3 2-1 From the dropdown list, select...
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... at www.asus.com. Go to the Tools menu to select EZ Flash 2 and press to the USB port, 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] Select or Load [Up/Down/Home/End] Move [Tab] Switch [B] Backup [V] Drive Info [ESC] Exit 2. The ASUS Update utility is capable of these two...
... at www.asus.com. Go to the Tools menu to select EZ Flash 2 and press to the USB port, 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] Select or Load [Up/Down/Home/End] Move [Tab] Switch [B] Backup [V] Drive Info [ESC] Exit 2. The ASUS Update utility is capable of these two...