Superior design and uncompromising quality control enabled Supermicro to offer high-end products with unsurpassable performance to the market. With this unbeatable track record, Supermicro has earned a reputation as a manufacturing leader in the industry. Supermicro strives to build long-term relationships with customers by providing them with outstanding engineering innovations, quality, availability, and reliability in today's mission-critical fast-paced e-world. PRODUCT FEATURES: 520W power supply; 1x 3.5" internal drive bay; 1x Slim DVD-ROM drive; 3x 12900RPM counter-rotating fan; 1x I/O expansion slots; 2x Rear, 2x front USB ports; Power switch & 5 LED indicators.