Get all the features & performance of the renowned Sonata line of enclosures with the Sonata Proto without breaking the bank. With 9 drive bays, 7 expansion slots, an intake air filter, the Sonata Proto offers a plethora of features & has all the quiet performance that the Sonata line is famous for. Along with its convenient front mounted USB (Universal Serial Bus) 2.0 & HD audio connectors, the Sonata Proto is the ideal combination of silence, efficiency & affordability.