ASUS Maximus IV Extreme-R3

Chipset
North Bridge	Intel P67
BIOS	AMI BIOS 32Mb Flash ROM, PnP, ACPI2.0a, Multi-Language BIOS, ASUS EZ Flash 2, DMI2.0, WfM2.0, SM BIOS 2.5
CPU Supported
Socket Type	LGA 1155
Intel CPU Support	Core i7, Core i5, Core i3
Memory
Memory Type	DDR3
Memory Speeds Supported	DDR3-2200 (O.C.), DDR3-2133 (O.C.), DDR3-2000 (O.C.), DDR3-1866 (O.C.), DDR3-1600, DDR3-1333
Memory Slots	4 x 240pin DIMM
Max Memory Supported	32GB
Memory Channel Support	Dual Channel
Supported Memory Technologies	Supports Intel Extreme Memory Profile
Storage Controllers
SATA 3Gb/s	4
SATA 6Gb/s	4
SATA RAID	0/1/5/10
Video
Onboard Graphic Chipset	None
NVIDIA Multi-GPU Support	2-Way SLI 3-Way SLI SLI
AMD Multi-GPU Support	CrossFireX
Audio
Audio System	Realtek ALC889
Audio Channels	8-Channel
Networking
LAN Chipset	Intel Gigabit Ethernet
LAN Speed	10/100/1000Mbps
Expansion Slots
PCI Express 2.0 x16	4 (supports x16, x8/x8 or x8/x16/x16)
PCI Express x4	1
PCI Express x1	1
Back Panel Ports
PS/2	1
USB 2.0	1
USB 3.0	8
eSATA 3Gb/s	2
LAN RJ-45	2
Audio Ports	6
Digital Audio	1 x Optical
Internal I/O
USB	4 x USB 2.0 Headers (supports 8 additional USB ports) 1 x USB 3.0 Header (supports 2 additional USB ports)
Other I/O	Front Audio Header Front Panel Header S/PDIF-Out Header 3 x Fan Connectors 1 x CPU Fan Header 1 x Power Fan Header Clearing CMOS Jumper 3 x Thermal Sensor Connectors 1 x LN2 Mode Header 3 x System Fan Headers
Power
ATX Power Connector	24-pin
ATX12V / EPS 12V Connector	8-pin
Power Supply Recommended	350W+
Manufacturer Power Supply Disclaimer	For a fully configured system, we recommend that you use a power supply unit (PSU) that complies with ATX 12 V Specification 2.0 (or later version) and provides a minimum power of 350 W.
Physical
Form Factor	ATX
Dimensions (WxD)	(305mm x 269mm) 12" x 10.6"