Intel Server chassis SC5650UPNA is a Quiet chassis designed for UP server segment 400W Highly Efficiency Power Supply (CSCI* Bronze) Special Quiet System design for office environment Air duct optimized for memory cooling Rear system fan changed to quiet model Super Quiet PSU at running PSU ventilation faced to board to facilitate the rear system fan loading HDD fan added to help the air flow Embedded sensor of PCH to better control thermal domain 6 fixed drive bays or hot swap SATA/SAS backplane assembly