ASUS MAXIMUS IV EXTREME, 1155, P67, 4xDDR2+DDR3, 4xPCIe, GL, 8CH, BT <Rev.3.0>

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CPU Intel® Socket 1155 for Intel® 2nd Generation Core™ i7 Processor/Core™ i5 Processor/Core™ i3 Processor/
Support Intel® 32nm 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 Intel CPU support list

Chipset Intel® P67(B3) Express Chipset  
Memory  4 x DIMM, Max. 32 GB, DDR 2200(O.C.)/2133(O.C.)/1866(O.C.)/1600/1333 Non-ECC,Un-buffered Memory
Dual Channel memory architecture
* Supports Intel® Extreme Memory Profile (XMP)
* According to Intel® SPEC, the Max. 32GB memory capacity can be supported with DIMMs of 8GB (or above). ASUS will update QVL once the DIMMs are available on the market.
* Due to CPU behavior, DDR3 2200/2000/1800 MHz memory module will run at DDR3 2133/1866/1600 MHz frequency as default.
* Please refer to www.asus.com or user manual for Memory QVL.

Expansion Slots  4 x PCIe 2.0 x16 (single @x16, dual @x8, triple @x8, x16, x16 )
1 x PCIe 2.0 x4
1 x PCIe 2.0 x1

Multi-GPU Support Support NVIDIA® 3-Way SLI™ / ATI CrossFireX™ Technology
Bluetooth Bluetooth Module Accessory Card
- Bluetooth V2.0/V2.1+EDR
- RC Bluetooth On/Off Switch
Storage  Intel® P67(B3) Express Chipset
2 xSATA 6.0 Gb/s ports (Red)
4 xSATA 3Gb/s ports (Gray)
Intel® Rapid Storage Technology Support RAID 0,1,5,10
Marvell® 9182 PCIe SATA6Gb/s controller
2 xSATA 6Gb/s ports (Red)
JMicron® 362 controller
2 xExternal SATA 3Gb/s ports at rear (SATA On-the-Go)
* Due to the Windows XP/ Vista limitation, the RAID array with the total capacity over 2TB cannot be set as a boot disk. A RAID array over 2TB can only be set as a data disk only.  
LAN  2 x Intel® Gigabit LAN        
Audio   Realtek ALC889 8-Channel High Definition Audio CODEC
- Blu-ray audio layer Content Protection
- Supports Jack-Detection, Multi-streaming, Front Panel Jack-Retasking
- Supports 1 x Optical S/PDIF out port at back I/O  
USB Intel® P67(B3) Express Chipset
- 9 x USB 2.0/1.1 ports (8 ports at mid-board, 1 port at rear is also for ROG connect)
1 x NEC USB3.0 Controller
- 2 x USB 3.0/2.0 ports at rear
1 x NEC USB3.0 Controller with 2 x VIA SuperSpeed USB hub controllers:
- 6 x USB 3.0/2.0 ports at rear
- 2 x USB 3.0/2.0 ports at mid-board for front panel support  
Overclocking Features  ROG Connect
RC Bluetooth
ROG iDirect
USB BIOS Flashback
ROG Extreme Engine Digi+
- 8-phase CPU power
- 3-phase Memory power
- ML Cap on CPU only
BIOS Flashback with onboard switch button
ProbeIt
Extreme Tweaker
iROG
Loadline Calibration
ROG OC Kit
- LN2 Mode
- PCIe x16 Lane Switch
- Debug LED
- Q_Reset
EFI BIOS features
- ROG BIOS Print
- GPU.DIMM Post
- CPU Socket Monitor
Intelligent overclocking tools:
- ASUS TurboV Evo
- O.C Profile
Overclocking Protection:
- COP EX (Component Overheat Protection - EX)
- Voltiminder LED
- ASUS C.P.R.(CPU Parameter Recall)  
Special Features  CPU Level Up
MemOK!
Onboard Switches: Power / Reset / Clr CMOS (at rear)
Q-Fan Plus
ASUS Fan Xpert
ASUS Q-LED (CPU, DRAM, VGA, Boot Device LED)
ASUS Q-Connector
ASUS Q-Shield
ASUS Q-Slot
ASUS Q-DIMM
ASUS EZ Flash 2
ASUS CrashFree BIOS 3
ASUS MyLogo 2  
Back Panel I/O Ports  1 x PS/2 Keyboard/Mouse Combo port
2 x External SATA
2 x LAN(RJ45) port(s)
8 x USB 3.0/2.0
1 x USB 2.0/1.1 (also for ROG Connect)
1 x S/PDIF Out (Optical)
8 -Channel Audio I/O
1 x Clr CMOS switch
1 x ROG Connect On/Off switch
1 x RC Bluetooth switch  
Internal I/O Connectors  1 x USB 3.0/2.0 connector(s) (Red) supports additional 2 USB 3.0 ports
4 x USB 2.0/1.1 connector(s) support additional 8 USB 2.0 ports
4 x SATA 6.0Gb/s connectors (Red)
4 x SATA 3.0Gb/s connectors (Gray)
1 x CPU Fan connector(s)
3 x Chassis Fan connector(s)
1 x Power Fan connector(s)
3 x Optional Fan connector
1 x Power-on switch
1 x Reset switch
1 x S/PDIF Out connector
1 x 24-pin ATX Power connector
1 x 8-pin ATX 12V Power connector
1 x Front panel audio connector
1 x System Panel connector
7 x ProbeIt measurement points
3 x Thermal sensor connectors
1 x En/Dis-able Clr CMOS header
2 x EZ Plug connectors (4-pin Molex Power connectors)
1 x RC Bluetooth header
1 x LN2 Mode switch
1 x Q_Reset switch
1 x Go Button
1 x BIOS switch button
1 x ROG light connector

BIOS  32 Mb Flash ROM , EFI AMI BIOS, PnP, DMI2.0, WfM2.0, SM BIOS 2.5, ACPI2.0a Multi-Language BIOS

Manageability WfM 2.0,DMI 2.0,WOL by PME,WOR by PME,PXE  
Accessories User's manual
1 2-port USB2.0 module
1 x I/O Shield
2 x SATA 3.0Gb/s signal cables (2-in-1)
2 x SATA 6.0Gb/s signal cables (2-in-1)
1 x Q-Connecor Kit (2-in-1)
1 x ROG Connect Cable
1 x ProbeIt cable set
1 x Thermal Sensor Cable Pack
1 x 3-Way SLI bridge
1 x SLI Cable
1 x Crossfire cable
1 x Cable Ties Pack
1 x ROG Theme Label
1 x 12-in-1 ROG Cable Label
1 x RC Bluetooth card
1 x ROG exclusive feature guide  
Support Disc Drivers
ASUS AI Suite II
ROG CPU-Z
3DMark Vantage
Kaspersky® Anti-Virus 1-year license

Form Factor  Extended ATX Form Factor
12 inch x 10.6 inch ( 30.5 cm x 26.9 cm )