2U SuperChassis 825 Supermicro's SC825 2U chassis optimizes every aspect of interior space without compromising superior cooling. The SC825 features 8 hot-swap hard drive bays for extra storage, 7 low-profile expansion slots, and advanced airflow/thermal-control design. It is also equipped with redundant 720W Gold Level / redundant 700W / 560W high efficiency power supply for superb power savings.