12 cm front coolling fan Adequate expansion support 4 x 5.25" external and 2 x 3.5" external / 5 x 3.5" internal bays Bent-in edges ensure safety assembly Provide excellent thermal solution (PCI-Express ventilation holes and air guide) Safe and easy design for component upgrade and maintenance Standard ATX tower, support ATX, MicroATX and Flex ATX MB ( 400 watt )
Specification Model ES55K Main Board Size: Micro ATX/ATX Expansion slots: Supports 7 full height slots Disk Drive Bays: 3.5" : *2/5(external/internal) 
5.25" : *4/0(external/internal) Power Supply: Standard ATX PSU(Optional);Stongly recommend AOpen power supply Front I/O access: USB X2, IEEE1394 (optional), Audio Cooling Fan: Front : 90/ 120/ 140 mm fan (optional)
Rear : 80/ 90/ 120 mm Dimensions: 185(W) * 412(H) * 445(D)mm Net Weight: 4.34 kg(w/o power supply)

Elegant & Stylish. mirror finish design. • Roll column design with bend-in edges .

Now, more people than ever can experience real innovation in DirectX®Â 11 gaming with AMD Radeon™ HD 6770 Graphics. Expand your visual real estate across up to five displays and get lost in the action with AMD Eyefinity multi-display technology. Using AMD App Acceleration, speed up everyday applications and do more than ever with your PC. Loaded with advanced technologies, these GPUs have the power and premium features needed for fully immersive gameplay.

The AMD Radeon™ HD 6670 graphics processors offer advanced video and display features, as well as AMD’s 2nd generation support for DirectXR 11 to give you the ultimate in “visual immersion” for your PC.

Intel®  B75 chipset, Socket 1155, 4*DDR3 1066/1333/1600*/2800*(OC), 2*PCI-Ex16 Gen3, 2*PCI-Ex1, 3*PCI, 1*Sata II, 5*SATA III, LAN 10/100/1000, 8CH Audio, 2*USB 3.0, 4*USB 2.0, VGA Max Share Memory 1760MB,  VGA ,DVI, HDMI-  DX11, RAID 0/1/5/10

• OC Genie II: Auto OC to boost performance in 1 sec
• ClickBIOS Concept: Easy-to-use UEFI BIOS interface
• i-Charger: fast charge iPad/iPhone/smartphone
• Support USB 3.0 & SATA 6Gb/s

• Military Class II components: Top quality & stability
• OC Genie II: Auto OC to boost performance in 1 sec
• ClickBIOS Concept: Easy-to-use UEFI BIOS interface
• i-Charger: fast charge iPad/iPhone/smartphone
• Support USB 3.0 & SATA 6Gb/s

- Supports FSB 800/1066/1333 MHz
- Supports two DIMM DDR3 800/1066/1333*(OC) DRAM
- 4 SATAII ports and 4 USB 2.0 ports

Packed with the latest GPU technologies, the Radeon™ HD 6570 graphics processors offer advanced video and display features, HDMI 1.4a for stereoscopic (3D) displays, as well as 2nd generation support for DirectX 11 to offer the ultimate in versatility for the everyday computing desktop.

Model No:    SXS4501024D5NM,  EAN Code :   4710710447304, Description :Sparkle GeForce GTS450 1024MB , GDDR5 PCI-Express with Native,   MiniHDMI Graphics Card