Asus M4A89TD PRO AM3 DDR3 Motherboard. This motherboard supports AMD AM3 multi-core processors with unique L3 cache and delivers better overclocking capabilities with less power consumption. It features dual-channel DDR3 memory support and accelerates data transfer rate up to 5200MT/s via HyperTransport™ 3.0 based system bus. This motherboard also supports AMD® CPUs in the new 45nm manufacturing process. ATI's CrossFireX™ boosts image quality along with rendering speed, eliminating the need to scale down screen resolution to get high quality images. CrossFireX™ allows higher antialiasing, anisotropic filtering, shading and texture settings. Adjust your display configurations, experiment with the 3D settings, and check the effects with a real-time 3D-rendered previews within ATI Catalyst™ Control Center.
   


* Please Note: This is an OEM motherboard and it does not come with rear I/O shield also known as back-plate cover. This part is not needed and you can still install the board in standard ATX case.

Specifications:

CPU
AMD Socket AM3 ;Phenom™II /Athlon™II /Sempron™ 100 Series Processors
AMD 140W CPU Support
AMD Cool 'n' Quiet™ Technology
Supports 45nm CPU                 

Chipset
AMD 890FX/SB850  

Front Side Bus
Up to 5200 MT/s ; HyperTransport™ 3.0             

Memory
4 x DIMM, Max. 16 GB, DDR3 2000(O.C.)/1600/1333/1066 ECC,Non-ECC,Un-buffered Memory
Dual Channel memory architecture
Due to CPU spec., AMD 100 and 200 series CPUs support up to DDR3 1066Mhz. With ASUS design, this motherboard can support up to DDR3 1333MHz.

Expansion Slots
2 x PCIe 2.0 x16 support ATI CrossFireX™ technology(@dual x16 speed)
1 x PCIe 2.0 x4
1 x PCIe 2.0 x1
2 x PCI

Storage
SB850 Chipset
6 xSATA 6.0 Gb/s ports Support RAID 0,1,5,10
JMicron® JMB361 PATA and SATA controller
1 xUltraDMA 133/100 for up to 2 PATA devices
1 xPower eSATA 3.0 Gb/s port 

LAN
Realtek® 8111E Gigabit LAN controller featuring AI NET2
VIA® 6315N controller supports 2 x 1394a port(s) (1 at mid-board; 1 at back panel)

Audio
ALC 892 8-Channel High Definition Audio CODEC
Supports 192kHz/ 24bit BD Lossless Sound
DTS Surround Sensation UltraPC
Supports Jack-Detection, Multi-Streaming, and Front Panel Jack-Retasking
Optical S/PDIF Out ports at back I/O
ASUS Noise Filter   

USB Ports
14 USB 2.0/1.1 ports (6 ports at mid-board, 8 ports at back panel)    

Back Panel I/O Ports
1 x S/PDIF Out (Optical)
1 x IEEE 1394a
1 x LAN(RJ45) port
8 x USB 2.0/1.1
8 -Channel Audio I/O
1 x PS/2 Keyboard port (Purple)
1 x PS/2 mouse port (Green)
1 x Clear CMOS button
1 x Power eSATA port   

Internal I/O Connectors
3 x USB connectors support additional 6 USB ports
1 x IDE connector
1 x IEEE 1394a connector
1 x CPU Fan connector
6 x SATA 6Gb/s connectors
1 x Chassis Fan connector (4-pin)
1 x Chassis Fan connector (3-pin)
1 x Power Fan connector
1 x S/PDIF Out Header
1 x Core Unlocker Switch
1 x Turbo Key II Switch
1 x MemOK! Button
Front panel audio connector
1 x COM connector
1 x 24-pin ATX Power connector
1 x 8-pin ATX 12V Power connector
System Panel 

BIOS
16 Mb Flash ROM , SPI, AMI BIOS, PnP, DMI2.0, WfM2.0, SM BIOS 2.5, ACPI 2.0a, Multi-language BIOS, ASUS EZ Flash 2, ASUS CrashFree BIOS 3 

Form Factor
ATX Form Factor
12 inch x 9.6 inch ( 30.5 cm x 24.4 cm )