AOpen barebone chassis feature precise mechanical construction and are ready for FCC system approval. These cases reflect AOpen's commitment to quality and offer resellers a way to build systems of superior quality. Combine AOpen cases with industry-leading AOpen motherboards to get the best fit. PRODUCT FEATURES: Housing material: SECC; MicroBTX slim case; Support MicroBTX motherboards; 4 lower profile slots or 3 low profile slots + 1 full length card; Equipped with 275W CFX 12V high efficiency switching power supply; Front USB, Audio; Bend-in edges ensure safe assembly and installation.