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... vi H81M-C specifications summary vi Product introduction 1.1 Before you proceed 1-1 1.2 Motherboard overview 1-1 1.3 Central Processing Unit (CPU 1-3 1.4 System memory 1-7 1.5 Expansion slots 1-9 1.6 Jumpers 1-10 1.7 Connectors 1-12 1.8 Onboard LEDs 1-19 1.9 Software support 1-20... BIOS information 2.1 Managing and updating your BIOS 2-1 2.2 BIOS setup program 2-6 2.3 My Favorites 2-10 2.4 Main menu 2-11 2.5 Ai Tweaker menu 2-13 2.6 Advanced menu 2-22 2.7 Monitor menu 2-31 2.8 Boot menu 2-34 2.9 Tools menu 2-40 2.10 Exit menu 2-41 Appendices Notices...A-1 ASUS...
... vi H81M-C specifications summary vi Product introduction 1.1 Before you proceed 1-1 1.2 Motherboard overview 1-1 1.3 Central Processing Unit (CPU 1-3 1.4 System memory 1-7 1.5 Expansion slots 1-9 1.6 Jumpers 1-10 1.7 Connectors 1-12 1.8 Onboard LEDs 1-19 1.9 Software support 1-20... BIOS information 2.1 Managing and updating your BIOS 2-1 2.2 BIOS setup program 2-6 2.3 My Favorites 2-10 2.4 Main menu 2-11 2.5 Ai Tweaker menu 2-13 2.6 Advanced menu 2-22 2.7 Monitor menu 2-31 2.8 Boot menu 2-34 2.9 Tools menu 2-40 2.10 Exit menu 2-41 Appendices Notices...A-1 ASUS...
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...; Extreme Memory Profile (XMP) * Hyper DIMM support is damaged or missing, contact your motherboard package for the following items. Motherboard Cables Accessories Application DVD Documentation ASUS H81M-C motherboard 2 x Serial ATA 6.0 Gb/s cables 1 x I/O Shield Support DVD User Guide If any of individual CPUs. Supports DVI-D with max. H81M-C specifications summary CPU Chipset Memory Graphics Expansion slots Storage Audio...
...; Extreme Memory Profile (XMP) * Hyper DIMM support is damaged or missing, contact your motherboard package for the following items. Motherboard Cables Accessories Application DVD Documentation ASUS H81M-C motherboard 2 x Serial ATA 6.0 Gb/s cables 1 x I/O Shield Support DVD User Guide If any of individual CPUs. Supports DVI-D with max. H81M-C specifications summary CPU Chipset Memory Graphics Expansion slots Storage Audio...
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viii H81M-C specifications summary Internal connectors BIOS features Manageability Support DVD Operating System Support Form factor 2 x USB 2.0/1.1 connectors support additional 4 USB 2.0 ports 2 x SATA 6.0 Gb/s connectors 2 x SATA 3.0 Gb/s connectors 1 x CLRTC jumper 1 x 4-pin CPU fan connector 1 x 4-pin Chassis fan connectors 1 x Front panel audio connector (AAFP) 1 x System ...PnP, DMI v2.0, WfM2.0, SM BIOS v2.7, ACPI v2.0a, SLP3.0, EUP-ready WOL, PXE, PME Wake up Drivers ASUS utilities EZ Update Anti-virus software (OEM version) Windows® 8 / Windows® 7 uATX form factor: 9.6"x 7"...
viii H81M-C specifications summary Internal connectors BIOS features Manageability Support DVD Operating System Support Form factor 2 x USB 2.0/1.1 connectors support additional 4 USB 2.0 ports 2 x SATA 6.0 Gb/s connectors 2 x SATA 3.0 Gb/s connectors 1 x CLRTC jumper 1 x 4-pin CPU fan connector 1 x 4-pin Chassis fan connectors 1 x Front panel audio connector (AAFP) 1 x System ...PnP, DMI v2.0, WfM2.0, SM BIOS v2.7, ACPI v2.0a, SLP3.0, EUP-ready WOL, PXE, PME Wake up Drivers ASUS utilities EZ Update Anti-virus software (OEM version) Windows® 8 / Windows® 7 uATX form factor: 9.6"x 7"...
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... limitation on the motherboard. • This motherboard does not support DIMMs made up of the same version or date code (D/C) from a DDR or DDR2 module. DIMM_A1 DIMM_B1 Channel Channel A Channel B Sockets DIMM_A1 DIMM_B1 H81M-C H81M-C 240-pin DDR3 DIMM sockets 1.4.2 Memory configurations You may ... Always install DIMMs with two Double Data Rate 3 (DDR3) Dual Inline Memory Module (DIMM) sockets. ASUS H81M-C 1-7 Check with the retailer to get the correct memory modules. • Due to protect the CPU. Use a maximum of 3GB system memory if you are using a 32-bit Windows® OS....
... limitation on the motherboard. • This motherboard does not support DIMMs made up of the same version or date code (D/C) from a DDR or DDR2 module. DIMM_A1 DIMM_B1 Channel Channel A Channel B Sockets DIMM_A1 DIMM_B1 H81M-C H81M-C 240-pin DDR3 DIMM sockets 1.4.2 Memory configurations You may ... Always install DIMMs with two Double Data Rate 3 (DDR3) Dual Inline Memory Module (DIMM) sockets. ASUS H81M-C 1-7 Check with the retailer to get the correct memory modules. • Due to protect the CPU. Use a maximum of 3GB system memory if you are using a 32-bit Windows® OS....
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...ATA 3.0 Gb/s hard disk drives via Serial ATA 3.0 Gb/s signal cables. The CPU_FAN connector supports a CPU fan of the connector. SATA3G_1 GND RSATA_TXP1 RSATA_TXN1 GND RSATA_RXN1 RSATA_RXP1 GND H81M-C SATA3G_2 GND RSATA_TXP2 RSATA_TXN2 GND RSATA_RXN2 RSATA_RXP2 GND H81M-C SATA 3.0Gb/s connectors • You must install Windows. Do not place jumper caps on... • When using hot-plug and NCQ, set the SATA Mode Selection item in the BIOS to the fan connectors. 5. Only the 4-pin CPU fan supports the ASUS Fan Xpert 2 feature. 1-16 Chapter 1: Product introduction These are not jumpers!
...ATA 3.0 Gb/s hard disk drives via Serial ATA 3.0 Gb/s signal cables. The CPU_FAN connector supports a CPU fan of the connector. SATA3G_1 GND RSATA_TXP1 RSATA_TXN1 GND RSATA_RXN1 RSATA_RXP1 GND H81M-C SATA3G_2 GND RSATA_TXP2 RSATA_TXN2 GND RSATA_RXN2 RSATA_RXP2 GND H81M-C SATA 3.0Gb/s connectors • You must install Windows. Do not place jumper caps on... • When using hot-plug and NCQ, set the SATA Mode Selection item in the BIOS to the fan connectors. 5. Only the 4-pin CPU fan supports the ASUS Fan Xpert 2 feature. 1-16 Chapter 1: Product introduction These are not jumpers!
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...Cache speed. Target CPU Graphics Speed : xxxxMHz Displays the target iGPU speed. 2.5.1 ASUS MultiCore Enhancement [Auto] [Auto] [Disabled] Default set the CPU core ratio automatically or manually. [Auto] Sets all cores. [Per Core] Allows you to achieve the desired CPU internal frequency. Select...target DRAM speed. If you to select the CPU overclocking options to set CPU Core Ratio individually. Allows you to set to default core ratio settings. 2.5.2 Ai Overclock Tuner [Auto] Allows you install memory modules supporting the eXtreme Memory Profile (X.M.P.) Technology, select ...
...Cache speed. Target CPU Graphics Speed : xxxxMHz Displays the target iGPU speed. 2.5.1 ASUS MultiCore Enhancement [Auto] [Auto] [Disabled] Default set the CPU core ratio automatically or manually. [Auto] Sets all cores. [Per Core] Allows you to achieve the desired CPU internal frequency. Select...target DRAM speed. If you to select the CPU overclocking options to set CPU Core Ratio individually. Allows you to set to default core ratio settings. 2.5.2 Ai Overclock Tuner [Auto] Allows you install memory modules supporting the eXtreme Memory Profile (X.M.P.) Technology, select ...
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... menu items. Incorrect field values can cause the system to 0.999V with a 0.001V interval. 2.5.19 SVID Control [Auto] Disabling SVID Support stops the processor from commmunicating with the voltage requirement below 1.65V. 2.6 Advanced menu The Advanced menu items allow you to set the DRAM... appears only when you set SVID Support to [Enabled]. 2.5.20 DRAM Voltage [Auto] Allows you to change the settings for the CPU and other system devices. CPU Digital I/O Voltage Offset [Auto] This item allows you to set the CPU digital I /O voltage offset. 2.5.18 CPU Digital I/O Voltage Offset Mode Sign ...
... menu items. Incorrect field values can cause the system to 0.999V with a 0.001V interval. 2.5.19 SVID Control [Auto] Disabling SVID Support stops the processor from commmunicating with the voltage requirement below 1.65V. 2.6 Advanced menu The Advanced menu items allow you to set the DRAM... appears only when you set SVID Support to [Enabled]. 2.5.20 DRAM Voltage [Auto] Allows you to change the settings for the CPU and other system devices. CPU Digital I/O Voltage Offset [Auto] This item allows you to set the CPU digital I /O voltage offset. 2.5.18 CPU Digital I/O Voltage Offset Mode Sign ...
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...speed to zero (0). Adjacent Cache Line Prefetch [Enabled] [Enabled] Allows a hardware platform to boot even without support for the CPU. [Disabled] Disables this menu show the CPU-related information that the BIOS automatically detects. Configuration options: [All] [1] [2] [3] Limit CPUID Maximum [Disabled]...system to activate in each processor package. ASUS H81M-C 2-23 2.6.1 CPU Configuration The items in this function. The items shown in submenu may be different due to the CPU you to choose the number of CPU cores to schedule two threads or processes simultaneously...
...speed to zero (0). Adjacent Cache Line Prefetch [Enabled] [Enabled] Allows a hardware platform to boot even without support for the CPU. [Disabled] Disables this menu show the CPU-related information that the BIOS automatically detects. Configuration options: [All] [1] [2] [3] Limit CPUID Maximum [Disabled]...system to activate in each processor package. ASUS H81M-C 2-23 2.6.1 CPU Configuration The items in this function. The items shown in submenu may be different due to the CPU you to choose the number of CPU cores to schedule two threads or processes simultaneously...
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Configuration options: [Auto] [Enabled] [C0/C1] [C2] [C3] [C6] [CPU C7] [CPU C7s] 2.6.2 PCH Configuration PCI Express Configuration DMI Link ASPM Control [Auto] Allows you to enable or disable Intel® Rapid Start Technology. Configuration ...not enough for Rapid Start Technology to work . Configuration options: [Enabled] [Disabled] ASUS H81M-C 2-25 Configuration options: [Auto] [Enabled] [Disabled] ASPM Support [Disabled] Allows you set the Intel® Rapid Start Technology to [Enabled]. Package C State Support [Auto] Allows you to set the wake-up and set to Rapid Start Technology...
Configuration options: [Auto] [Enabled] [C0/C1] [C2] [C3] [C6] [CPU C7] [CPU C7s] 2.6.2 PCH Configuration PCI Express Configuration DMI Link ASPM Control [Auto] Allows you to enable or disable Intel® Rapid Start Technology. Configuration ...not enough for Rapid Start Technology to work . Configuration options: [Enabled] [Disabled] ASUS H81M-C 2-25 Configuration options: [Auto] [Enabled] [Disabled] ASPM Support [Disabled] Allows you set the Intel® Rapid Start Technology to [Enabled]. Package C State Support [Auto] Allows you to set the wake-up and set to Rapid Start Technology...
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... When read/write of commands. Configuration options: [Disabled] [Enabled] 2.6.4 System Agent Configuration VT-d [Disabled] Allows you to enable or disable CPU SA Audio Device. Configuration options: [Enabled] [Disabled] 2-26 Chapter 2: Getting started SATA Mode Selection [AHCI] Allows you to set the ...previous item to [AHCI] and allows you to enable/disable SATA Hot Plug Support. Status Check [Enabled] S.M.A.R.T. (Self-Monitoring, Analysis and Reporting Technology) is installed to the corresponding SATA port. Intel® Smart Connect ...
... When read/write of commands. Configuration options: [Disabled] [Enabled] 2.6.4 System Agent Configuration VT-d [Disabled] Allows you to enable or disable CPU SA Audio Device. Configuration options: [Enabled] [Disabled] 2-26 Chapter 2: Getting started SATA Mode Selection [AHCI] Allows you to set the ...previous item to [AHCI] and allows you to enable/disable SATA Hot Plug Support. Status Check [Enabled] S.M.A.R.T. (Self-Monitoring, Analysis and Reporting Technology) is installed to the corresponding SATA port. Intel® Smart Connect ...
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... is under the lower limit, the CPU fan will operate at the minimum duty cycle. 2.7.5 Chassis Q-Fan Control [Enabled] [Disabled] [Enabled] Disables the Chassis Q-Fan control feature. Chassis Fan Min. Configuration options: [Disabled] [Enabled] ASUS H81M-C 2-33 The values range from 40ºC to 75ºC. Configuration options: [Ignore] [200RPM] [... function. When the chassis temperature is under 40ºC, the chassis fan will operate at the minimum duty cycle. 2.7.6 Anti Surge Support [Disabled] This item allows you to adjust the maximum chassis fan duty cycle.
... is under the lower limit, the CPU fan will operate at the minimum duty cycle. 2.7.5 Chassis Q-Fan Control [Enabled] [Disabled] [Enabled] Disables the Chassis Q-Fan control feature. Chassis Fan Min. Configuration options: [Disabled] [Enabled] ASUS H81M-C 2-33 The values range from 40ºC to 75ºC. Configuration options: [Ignore] [200RPM] [... function. When the chassis temperature is under 40ºC, the chassis fan will operate at the minimum duty cycle. 2.7.6 Anti Surge Support [Disabled] This item allows you to adjust the maximum chassis fan duty cycle.