Intel® Socket 1155 for 2nd Generation Core™ i7/Core™ i5/Core™ i3 Processors Supports Intel® 32 nm CPU Supports Intel® Turbo Boost Technology 2.0 * The Intel® Turbo Boost Technology 2.0 support depends on the CPU types. * Refer to www.asus.com for CPU support list
Chipset
Intel® H61(B3)
Memory
2 x DIMM, Max. 16GB, DDR3 1333/1066 Hz Non-ECC, Un-buffered Memory Dual Channel Memory Architecture Supports Intel® Extreme Memory Profile (XMP) * The maximum 16GB memory capacity can be supported with 8GB or above DIMMs. ASUS will update the memory QVL once the DIMMs are available in the market. * Refer to www.asus.com or user manual for the Memory QVL (Qualified Vendors Lists). * Due to OS limitation, when installing total memory of 4GB capacity or more, Windows® 32-bit operation system may only recognize less than 3GB. Install a 64-bit Windows® OS when you want to install 4GB or more memory on the motherboard.
Graphic
Integrated Graphics Processor VGA output support : RGB port - Supports RGB with max. resolution 2048 x 1536 @ 75 Hz Supports DirectX 10.1
Expansion Slots
1 x PCIe 2.0 x16 3 x PCIe 2.0 x1
Storage
Intel® H61(B3) chipset : 4 x SATA 3Gb/s port(s), blue
LAN
Realtek® 8111E , 1 x Gigabit LAN Controller(s)
Audio
Realtek® ALC 887 8-Channel High Definition Audio CODEC *1
USB Ports
Intel® H61(B3) chipset : 10 x USB 2.0 port(s) (4 at back panel, black, 6 at mid-board)
Overclocking Features
Overclocking Protection : - ASUS C.P.R.(CPU Parameter Recall)
Special Features
ASUS EPU : - EPU ASUS Exclusive Features : - AI Suite II - Ai Charger - Anti-Surge - Low EMI Solution - ESD Guards - ASUS UEFI BIOS EZ Mode featuring friendly graphics user interface ASUS Quiet Thermal Solution : - Stylish Fanless Design Heat-sink solution - ASUS Fan Xpert ASUS EZ DIY : - ASUS CrashFree BIOS 3 - ASUS EZ Flash 2 - ASUS MyLogo 2
Back I/O Ports
1 x PS/2 keyboard (purple) 1 x PS/2 mouse (green) 1 x D-Sub 1 x LAN (RJ45) port(s) 4 x USB 2.0 1 x COM port(s) 1 x Parallel port(s) 3 x Audio jack(s)
Internal I/O Ports
3 x USB 2.0 connector(s) support(s) additional 6 USB 2.0 port(s) 4 x SATA 3Gb/s connector(s) 1 x CPU Fan connector(s) 1 x Chassis Fan connector(s) 1 x S/PDIF out header(s) 1 x 24-pin EATX Power connector(s) 1 x 4-pin ATX 12V Power connector(s) 1 x Front panel audio connector(s) (AAFP) 1 x Internal speaker connector(s) 1 x System panel(s)
Drivers ASUS Utilities ASUS Update Anti-virus software (OEM version)
Form Factor
uATX Form Factor 9.6 inch x 7.6 inch ( 24.4 cm x 19.3 cm )
Note
*1: Use a chassis with HD audio module in the front panel to support an 8-channel audio output.
LGA1155 socket for Intel® Second Generation Core™ i7/ Core™ i5/ Core™ i3 Processors
This motherboard supports the Intel® second generation Core™ i7 / Core™ i5 / Core™ i3 processors in LGA1155 package with memory and PCI Express controllers integrated to support 2-channel (2 DIMMs) DDR3 memory and 16 PCI Express 2.0 lanes. This provides great graphics performance. Intel® second generation Core™ i7 / Core™ i5 / Core™ i3 processors are among the most powerful and energy efficient CPUs in the world.
Intel® H61(B3) Express Chipset
The Intel® H61(B3) Express Chipset is the latest single-chipset design to support the new 1155 socket Intel® Core™ i7 / Core™ i5 / Core™ i3 2nd generation processors. It provides improved performance by utilizing serial point-to-point links, allowing increased bandwidth and stability.
Dual-Channel DDR3 1333 / 1066 support
The motherboard supports DDR3 memory that features data transfer rates of 1333 / 1066 MHz to meet the higher bandwidth requirements of the latest 3D graphics, multimedia, and Internet applications. The dual-channel DDR3 architecture enlarges the bandwidth of your system memory to boost system performance.
Anti-Surge Protection
Protect Your Device Anti-Surge Protection Design detects overvoltage conditions and prevents voltage surges from spreading in real time. It also actively cuts off the overvoltage supply to protect the system.
1. Real-time over voltage detection. 2. Active protection against potential damage to your motherboards and systems.
EPU
Tap into the world¡¯s first real time PC power saving engine through AI Suite II utility. Get total system power savings by automatically detecting current PC loadings and intelligently moderating power consumption. This also reduces fan noise and extends component longevity.
AI Suite II
With its fast user-friendly interface, ASUS AI Suite II consolidates all the exclusive ASUS features into one simple to use software package. It allows you to supervise overclocking, energy management, fan speed control, voltage and sensor readings. This all-in-one software offers diverse and ease to use functions, with no need to switch back and forth between different utilities.
UEFI BIOS (EZ Mode)
Exclusive to ASUS motherboards, its UEFI (Unified Extensible Firmware Interface) is the first ever mouse-controlled graphical BIOS interface designed with dual selectable modes. It delivers a user-friendly interface that goes beyond traditional keyboard-only BIOS controls to enable more flexible and convenient input with quick scrolling. Users can easily navigate the UEFI BIOS with the smoothness of their operating system. Quick and simple overclocking and setup sharing is facilitated by the F12 hotkey BIOS snapshot feature. The exclusive EZ Mode displays frequently-accessed setup info, while the Advanced Mode is for experienced performance enthusiasts that demand far more intricate system control, including detailed DRAM information.
Supports Hard Drives over 2.2TB ASUS UEFI BIOS natively supports hard drives larger than 2.2TB in 64-bit, with full storage space utilization helping deliver far more exciting computing than traditional BIOS versions.
Exclusive ASUS Interface • EZ Mode - gives easy access to selectable, optimized system modes, clear system info display and drag and drop boot prioritizing • Advanced Mode - for experienced performance enthusiasts that demand intricate system settings
Fan Xpert
Active Quiet & Cool ASUS Fan Xpert intelligently allows users to adjust the CPU fan speed according to different ambient temperature , which is caused by different climate conditions in different geographic regions and system loading.Built-in variety of useful profiles offer flexible controls of fan speed to achieve a quiet and cool environment.
EZ-Flash 2
Simply update BIOS from a USB flash disk before entering the OS EZ Flash 2 is a user-friendly BIOS update utility. Simply launch this tool and update BIOS from a USB flash disk before entering the OS. You can update your BIOS only in a few clicks without preparing an additional floppy diskette or using an OS-based flash utility.
CrashFree BIOS 3
Simply restore corrupted BIOS data from USB flash disk The ASUS CrashFree BIOS 3 allows users to restore corrupted BIOS data from a USB flash disk containing the BIOS file. This utility saves users the cost and hassle of buying a replacement BIOS chip.
ErP ready
The motherboard is European Union´s Energy-related Products (ErP) ready, and ErP requires products to meet certain energy efficiency requirements in regards to energy consumptions. This is in line with ASUS vision of creating environment-friendly and energy-efficient products through product design and innovation to reduce carbon footprint of the product and thus mitigate environmental impacts.
Accessories
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the accuracy and the use of this document.
This motherboard supports the Intel® second generation Core™ i7 / Core™ i5 / Core™ i3 processors in LGA1155 package with memory and PCI Express controllers integrated to support 2-channel (2 DIMMs) DDR3 memory and 16 PCI Express 2.0 lanes. This provides great graphics performance. Intel® second generation Core™ i7 / Core™ i5 / Core™ i3 processors are among the most powerful and energy efficient CPUs in the world.
The Intel® H61(B3) Express Chipset is the latest single-chipset design to support the new 1155 socket Intel® Core™ i7 / Core™ i5 / Core™ i3 2nd generation processors. It provides improved performance by utilizing serial point-to-point links, allowing increased bandwidth and stability. 
Protect Your Device Anti-Surge Protection Design detects overvoltage conditions and prevents voltage surges from spreading in real time. It also actively cuts off the overvoltage supply to protect the system.
Tap into the world¡¯s first real time PC power saving engine through AI Suite II utility. Get total system power savings by automatically detecting current PC loadings and intelligently moderating power consumption. This also reduces fan noise and extends component longevity.
With its fast user-friendly interface, ASUS AI Suite II consolidates all the exclusive ASUS features into one simple to use software package. It allows you to supervise overclocking, energy management, fan speed control, voltage and sensor readings. This all-in-one software offers diverse and ease to use functions, with no need to switch back and forth between different utilities.
Exclusive to ASUS motherboards, its UEFI (Unified Extensible Firmware Interface) is the first ever mouse-controlled graphical BIOS interface designed with dual selectable modes. It delivers a user-friendly interface that goes beyond traditional keyboard-only BIOS controls to enable more flexible and convenient input with quick scrolling. Users can easily navigate the UEFI BIOS with the smoothness of their operating system. Quick and simple overclocking and setup sharing is facilitated by the F12 hotkey BIOS snapshot feature. The exclusive EZ Mode displays frequently-accessed setup info, while the Advanced Mode is for experienced performance enthusiasts that demand far more intricate system control, including detailed DRAM information. 
Active Quiet & Cool
Simply update BIOS from a USB flash disk before entering the OS
Simply restore corrupted BIOS data from USB flash disk
The motherboard is European Union´s Energy-related Products (ErP) ready, and ErP requires products to meet certain energy efficiency requirements in regards to energy consumptions. This is in line with ASUS vision of creating environment-friendly and energy-efficient products through product design and innovation to reduce carbon footprint of the product and thus mitigate environmental impacts.