Made of high-quality aluminum alloy CNC, equipped with ultra-thin silent fan and aluminum passive cooling, which can control the heat generated by the chip to quickly dissipate and cool down when the motherboard is running, keeping the motherboard's operating temperature below the normal value and running stably. Thereby extending the service life of the motherboard Based On 5 Aluminium Alloy Case, With Dual Quiet Cooling Fans And Aluminium Heatsink For Better Heat Dissipation Open case design, which has a lower effect on WLAN All ports and slots of the case can match with for 5 well Reinforced aluminum material, and Compatible With:for 5 Material: Aluminum Alloy Colour:Black Package Contents: 1 x shell 1 x dual fan 1 set x mounting screws Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.