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 Platinum level redundant 740W, Platinum level digital single 600W power supply for superb power savings.